Plants need sunlight, water, and air to survive. An experiment showed that leaves covered with vaseline to block air died, while uncovered leaves remained green. Leaves covered with black paper to block sunlight turned yellow, showing they need sunlight for photosynthesis. Seeds planted with and without water showed that water is essential for growth and transporting nutrients. Seeds planted with and without air access in jars and cups found that air is required for growth, as the lack of air caused seeds to not sprout. Overall, the experiments demonstrated the basic needs of plants are sunlight, water, and air.
Grade 2 School Garden Lesson Plan - Seeds Lesson; What’s in a Seed ~ Massachusetts
|=> In this activity students will soak bean seeds and then look inside the soaked bean seeds to observe the different parts of the seed
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double your School Garden Food Production with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases School Garden Food Production by 250 Percent
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Grade 2 School Garden Lesson Plan - Seeds Lesson; What’s in a Seed ~ Massachusetts
|=> In this activity students will soak bean seeds and then look inside the soaked bean seeds to observe the different parts of the seed
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double your School Garden Food Production with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases School Garden Food Production by 250 Percent
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Colorado School Garden Lesson Plan a1: Edible Plant Parts: What’s for Lunch? (1st Grade and Beyond) - Indoor Projects, Lesson Plans and Activities
|=> Overview: Students will learn about the six parts of a plant, their functions and learn which parts of the plants we eat
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double your School Garden Food Production with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases School Garden Food Production by 250 Percent
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Basic presentation of the parts of a plant and of the life cycle of plants. Pitched at about the 2nd, 3rd or 4th grade level. Lots of descriptive pictures and diagrams.
This is a Science unit about plants for elementary students.
Unit index:
- Plants are living things.
The needs of a plant.
Plant parts
- Tree, bush and grass.
- We eat plants.
- Wild and cultivated plants.
- We need plants.
Colorado School Garden Lesson Plan a1: Edible Plant Parts: What’s for Lunch? (1st Grade and Beyond) - Indoor Projects, Lesson Plans and Activities
|=> Overview: Students will learn about the six parts of a plant, their functions and learn which parts of the plants we eat
`
For more information, Please see websites below:
`
Organic Edible Schoolyards & Gardening with Children
http://scribd.com/doc/239851214
`
Double your School Garden Food Production with Organic Tech
http://scribd.com/doc/239851079
`
Free School Gardening Art Posters
http://scribd.com/doc/239851159`
`
Companion Planting Increases School Garden Food Production by 250 Percent
http://scribd.com/doc/239851159
`
Healthy Foods Dramatically Improves Student Academic Success
http://scribd.com/doc/239851348
`
City Chickens for your Organic School Garden
http://scribd.com/doc/239850440
`
Simple Square Foot Gardening for Schools - Teacher Guide
http://scribd.com/doc/239851110
Basic presentation of the parts of a plant and of the life cycle of plants. Pitched at about the 2nd, 3rd or 4th grade level. Lots of descriptive pictures and diagrams.
This is a Science unit about plants for elementary students.
Unit index:
- Plants are living things.
The needs of a plant.
Plant parts
- Tree, bush and grass.
- We eat plants.
- Wild and cultivated plants.
- We need plants.
green house effect(power point presentation)
prepared by :rishabh sood
school:k.v palampur
class:11th science
from:palampur(h,p)
for more contact:rishabhsood92@gmail.com
This is a combined presentation done by me and my friends namely Nidhi Singh, Priyanka Pokharel,Swostina Ranjit and Rubina Khadka. Hope you will like this effort of ours.
P.S. The video might not work.If you want to see the video go to http://www.youtube.com/watch?v=PXvpDoGrRGU
Let's dive deeper into the world of ODC! Ricardo Alves (OutSystems) will join us to tell all about the new Data Fabric. After that, Sezen de Bruijn (OutSystems) will get into the details on how to best design a sturdy architecture within ODC.
LF Energy Webinar: Electrical Grid Modelling and Simulation Through PowSyBl -...DanBrown980551
Do you want to learn how to model and simulate an electrical network from scratch in under an hour?
Then welcome to this PowSyBl workshop, hosted by Rte, the French Transmission System Operator (TSO)!
During the webinar, you will discover the PowSyBl ecosystem as well as handle and study an electrical network through an interactive Python notebook.
PowSyBl is an open source project hosted by LF Energy, which offers a comprehensive set of features for electrical grid modelling and simulation. Among other advanced features, PowSyBl provides:
- A fully editable and extendable library for grid component modelling;
- Visualization tools to display your network;
- Grid simulation tools, such as power flows, security analyses (with or without remedial actions) and sensitivity analyses;
The framework is mostly written in Java, with a Python binding so that Python developers can access PowSyBl functionalities as well.
What you will learn during the webinar:
- For beginners: discover PowSyBl's functionalities through a quick general presentation and the notebook, without needing any expert coding skills;
- For advanced developers: master the skills to efficiently apply PowSyBl functionalities to your real-world scenarios.
Search and Society: Reimagining Information Access for Radical FuturesBhaskar Mitra
The field of Information retrieval (IR) is currently undergoing a transformative shift, at least partly due to the emerging applications of generative AI to information access. In this talk, we will deliberate on the sociotechnical implications of generative AI for information access. We will argue that there is both a critical necessity and an exciting opportunity for the IR community to re-center our research agendas on societal needs while dismantling the artificial separation between the work on fairness, accountability, transparency, and ethics in IR and the rest of IR research. Instead of adopting a reactionary strategy of trying to mitigate potential social harms from emerging technologies, the community should aim to proactively set the research agenda for the kinds of systems we should build inspired by diverse explicitly stated sociotechnical imaginaries. The sociotechnical imaginaries that underpin the design and development of information access technologies needs to be explicitly articulated, and we need to develop theories of change in context of these diverse perspectives. Our guiding future imaginaries must be informed by other academic fields, such as democratic theory and critical theory, and should be co-developed with social science scholars, legal scholars, civil rights and social justice activists, and artists, among others.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Connector Corner: Automate dynamic content and events by pushing a buttonDianaGray10
Here is something new! In our next Connector Corner webinar, we will demonstrate how you can use a single workflow to:
Create a campaign using Mailchimp with merge tags/fields
Send an interactive Slack channel message (using buttons)
Have the message received by managers and peers along with a test email for review
But there’s more:
In a second workflow supporting the same use case, you’ll see:
Your campaign sent to target colleagues for approval
If the “Approve” button is clicked, a Jira/Zendesk ticket is created for the marketing design team
But—if the “Reject” button is pushed, colleagues will be alerted via Slack message
Join us to learn more about this new, human-in-the-loop capability, brought to you by Integration Service connectors.
And...
Speakers:
Akshay Agnihotri, Product Manager
Charlie Greenberg, Host
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
PHP Frameworks: I want to break free (IPC Berlin 2024)Ralf Eggert
In this presentation, we examine the challenges and limitations of relying too heavily on PHP frameworks in web development. We discuss the history of PHP and its frameworks to understand how this dependence has evolved. The focus will be on providing concrete tips and strategies to reduce reliance on these frameworks, based on real-world examples and practical considerations. The goal is to equip developers with the skills and knowledge to create more flexible and future-proof web applications. We'll explore the importance of maintaining autonomy in a rapidly changing tech landscape and how to make informed decisions in PHP development.
This talk is aimed at encouraging a more independent approach to using PHP frameworks, moving towards a more flexible and future-proof approach to PHP development.
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Transcript: Selling digital books in 2024: Insights from industry leaders - T...BookNet Canada
The publishing industry has been selling digital audiobooks and ebooks for over a decade and has found its groove. What’s changed? What has stayed the same? Where do we go from here? Join a group of leading sales peers from across the industry for a conversation about the lessons learned since the popularization of digital books, best practices, digital book supply chain management, and more.
Link to video recording: https://bnctechforum.ca/sessions/selling-digital-books-in-2024-insights-from-industry-leaders/
Presented by BookNet Canada on May 28, 2024, with support from the Department of Canadian Heritage.
GDG Cloud Southlake #33: Boule & Rebala: Effective AppSec in SDLC using Deplo...James Anderson
Effective Application Security in Software Delivery lifecycle using Deployment Firewall and DBOM
The modern software delivery process (or the CI/CD process) includes many tools, distributed teams, open-source code, and cloud platforms. Constant focus on speed to release software to market, along with the traditional slow and manual security checks has caused gaps in continuous security as an important piece in the software supply chain. Today organizations feel more susceptible to external and internal cyber threats due to the vast attack surface in their applications supply chain and the lack of end-to-end governance and risk management.
The software team must secure its software delivery process to avoid vulnerability and security breaches. This needs to be achieved with existing tool chains and without extensive rework of the delivery processes. This talk will present strategies and techniques for providing visibility into the true risk of the existing vulnerabilities, preventing the introduction of security issues in the software, resolving vulnerabilities in production environments quickly, and capturing the deployment bill of materials (DBOM).
Speakers:
Bob Boule
Robert Boule is a technology enthusiast with PASSION for technology and making things work along with a knack for helping others understand how things work. He comes with around 20 years of solution engineering experience in application security, software continuous delivery, and SaaS platforms. He is known for his dynamic presentations in CI/CD and application security integrated in software delivery lifecycle.
Gopinath Rebala
Gopinath Rebala is the CTO of OpsMx, where he has overall responsibility for the machine learning and data processing architectures for Secure Software Delivery. Gopi also has a strong connection with our customers, leading design and architecture for strategic implementations. Gopi is a frequent speaker and well-known leader in continuous delivery and integrating security into software delivery.
JMeter webinar - integration with InfluxDB and GrafanaRTTS
Watch this recorded webinar about real-time monitoring of application performance. See how to integrate Apache JMeter, the open-source leader in performance testing, with InfluxDB, the open-source time-series database, and Grafana, the open-source analytics and visualization application.
In this webinar, we will review the benefits of leveraging InfluxDB and Grafana when executing load tests and demonstrate how these tools are used to visualize performance metrics.
Length: 30 minutes
Session Overview
-------------------------------------------
During this webinar, we will cover the following topics while demonstrating the integrations of JMeter, InfluxDB and Grafana:
- What out-of-the-box solutions are available for real-time monitoring JMeter tests?
- What are the benefits of integrating InfluxDB and Grafana into the load testing stack?
- Which features are provided by Grafana?
- Demonstration of InfluxDB and Grafana using a practice web application
To view the webinar recording, go to:
https://www.rttsweb.com/jmeter-integration-webinar
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
1. PRACTICAL 1
Basic needs of plants
Objective
To determine the basic needs of plants sunlight, air and water.
Hypothesis
Plant needs sun light as a basic needs and to make food.
Introduction/ theoretical knowledge
Plants needs sunlight, air, water and nutrients to survive. Plants needs sunlight when
photosynthesis process occur. In addition plants also needs carbon dioxide and water
to complete the process. Plants make their own food. Plants produce their own food.
That is why we call them producers. But it takes energy to produce food. The energy is
from the sun! They use that energy to produce food. Plants need this
food to live and grow.
Problem : Do Plants need Sunshine
Materials
Growing plant with large leaves
Vaseline
Black construction paper
Paper clips
Procedure A:
1.Green plant was placed in well-lighted place where it can be seen without being
handled by class members.
2. The both sides of several leaves were covered carefully with Vaseline.
3. These leaves were observed each day and compared thaem with uncoated leaves.
The colour and freshness of the leaves were observed.
2. Procedure B:
1. The pattern on one side of a folded piece of black construction paper was cut out.
2. The pattern was clipped on the leaf and left it attach for several days.
3. After several days the construction paper was removed and the results were
observed.
Results:
Observation Inferences
Procedure A The leaf will die soon. The leaf does not receive
air
Procedure B The leaf will turn to
yellowish color.
Light is need for plants to
carry out photosynthesis
process. As the leaf was
covered it cannot
Questions:
1.What would happen if only the topside were coated? The bottom side?
If only the top side were coated the leaf will be in change in yellowish colour because
the chlorophyll does not absorb the sunlight to do photosynthesis. If the bottom side
were coated there will no change in colour or to the leaf because chlorophyll are not
found at the bottom. Otherwise top of leaf is not coated and help to do photosynthesis.If
only the topside were coated the leaf will be in yellowish colour and if only the bottom
side were coated the leaf will not be yellowish colour.
2.Would leaf continue to die if the coating were removed after one day?
No, it won’t die. The leaf still can survive if the coating were removed after one day.
When the leaf is under the sunlight again, it can still produce food with the help of
chlorophyll and it can make photosynthesis process. In other hand, the plant also can
get back its energy in ATP form by absorb the sun light.
3. 3.What would happen if only half the leaf were covered? ( Half of the top side and
half of the bottom side? )
If only half of the top side has been covered, the part which is covered it will be in
yellowish color. This is because that specific part unable to carry out photosynthesis. At
the same time the half of the leaf that has not been covered will be green in color as it
able to do photosynthesis with the presence of sunlight because the chlorophylls are
still alive which are pigments green in colour. .
4.What happen to the plant leaf after the mask is removed? Observed for several
days.
After remove the mask the plant leaf looks yellow in colour due to unable to carry ot
photosynthesis and cannot make food. After several days, the plant’s leaf turns healthy
again. With the help of sunlight, the leaf receives green pigments again and it can make
the photosynthesis process to make food
4. Hypothesis : plant needs water as basic needs.
Problem : Can Plants Live Without Water ?
Materials :
Bean seeds
Two small flower pots
Water
Soil, humus
Procedure :
1.Some been seeds were planted in each of the flower pots.
2.Both plants were placed in sunshine.
3.Plant ‘A’ was water each day.
4.Plant ‘B’ was not water.
Results:
Observation Inferences
Plant ‘A’ The seeds were grows and
formed a healthy plant.
This seed gets nutrients by
the transportation process
based on the flow of water.
Plant ‘B’ The seeds do not grow. As this seeds are not
watered they do not receives
water. As a result they do
not grow
Questions ;
1.Would the same results be possible with different kind of seeds?
No. different seeds have different characteristics. Such as, thickening of seed coats,
Types of the plant (monocotyledon or dicotyledon) or breeds is based on the result also.
5. 2.Is it possible to give plant too much water?
No. If the plants is given too much of water they will wilt. They breath through their roots
and when there is too much water, the roots cannot take in gases. It is actually slowly
suffocating when there is too much water for a plant.
3.How can farmer tell if a plant is receiving enough water? Not enough water?
Too much water?
The farmer can tell if a plant receiving enough water by seeing the freshness and color
of the leaf. If the plant receive enough water its color will be green. Other than that , the
farmer feel the top of the soil before they water the plant. If the soil is damp, the plant
does not need more water. This is another way knowing that plant receive enough
water. If the soil surface is dry it means that the plant is does not enough water. If the
plant receiving not enough water the color of the leaf will turn into yellow. At last, if the
plant receiving too much of water when the soil over the limit of damp soil . this makes
the leaf will turn into dark yellow and wilt.
6. Hyphothesis : Plants need air as their basic needs to stay alive.
Problem: Can Plant Live Without Air?
Materials:
Bean seeds
Two jars and two plastic cups
Soil , humus
Cotton
Water
Procedure A :
1.Bean seed were planted in jars.
2.Both soil were fairly watered fairly well. When air bubbles cease to rise the air has
been expelled from the soil.
3.The first jar was capped. This cuts off the air supply to the plant.
4.The second second plant was kept moist by watering as needed.
Procedure B :
1. The two cups were filled with water.
2. On one, a cotton pad and some beans on the cotton were placed. This kept the
seeds moist.
3. The seeds were dropped into the water of the second cup thus eliminating the air.
4. The temperature and light were kept the same for both cups.
7. Results:
Observation Inferences
Jars/Cups 1 2 1 2
Procedure
A
The seeds
does not
grow.
The seeds
grows and
looks
healthy.
The seed do not
grow due to cuts off
the air supply to the
seed.
The seeds to grows
due to enough of air
supply.
Procedure
B
The seeds
grow.
The seeds
does not
grows.
The seeds were
grow due to The
continuous air
supply.
The seed do not
grow due to the
elimination of supply
of the air.
Questions:
1.What other ways might air be eliminated from the cup?
The other way might air be eliminated from the cup is by using vacuum pump. This is
because all the gas molecules which is fulfilled the cup can be easily eliminated by
using the vacuum pump. To ensure that no more air is left inside the cup, the cup
should be capped.
2.Is too much air ever a problem to the farmer?
Plants need to breathe, to make the respiration process is complete and have a fresh
air. It isn't necessary to have constantly changing air, but lightly moving air can often
make a difference in the plants growth and health.
3.Would the same results occur with different types of seeds?
Yes. This is because all the seeds needs air to breath. Therefore the same results occur
with different types of seeds.
4.Plants make their food but they do need a supply of mineral. Choose three
minerals and describe what happens to plant growing without them.
8. The main three minerals that plant needs are potassium, calcium, and phosphorus.
Plants need potassium to balance water in cells. Without potassium the cells in the
plants could burst because of the unbalancing water in the cells and the plant may die.
Thus, Calcium is an essential plant nutrient. It is required for various structural roles in
the cell wall and membranes. This is because calcium is also needed for the growth of
young shoot and root. Further more , Plants also need Phosphorus for respiration, cell
division and membranes. If the plant does not have the phosphorus mineral, the plant
would not grow because the cell division process could not occur.
5.Animals and plants need food. Give two reasons why animal and plants need
food.
All living things in the world need food. Animals and plants need food to get energy, to
grow and to stay healthy. Plants need food to grow and as it is an producer it plays an
important role to stabilize the ecosystem. The photosynthesis process helps the plants
to get nutrients and vitamins to stay healthy.
Conclusion
A plant mainly needs sun light, water, and air as their basic needs to survive. This three
basic needs fulfill a plant photosynthesis process and respiratory system.
Discussion
The experiment that we carry out based on the basic needs of the plants benefits me to
learn new things and get new experience. Sivaneswaran and myself , Pingalan were
carry out this experiment in pair. First of all , we used veseline to cover the leaf of the
plant. After the leaf wee covered we could understand from the observation that plants
need air to survive. The Vaseline makes the air does not reach the leaf and made the
leaf wilt. When the leaf of the plant were covered by construction paper it made the
plant do turn into yellow in color due to the absence of the sun light. Other than that ,
seeds were placed in two different pots which have the same amount of soil and humus
in different condition. One is by pouring water to the seeds daily and another one is left
without water. At last , the seeds which were watered every day grows healthily
whereas the seeds without watered does not grow. By this I learn that plants need water
to survive. Next , we had two jars where the air was eliminated in one of the jar whereas
another jar was kept moist. Other than that some seeds were placed in two other cups
where kept the seeds moist in one cup on cotton and puts the seeds in water in another
9. cup by eliminating the air. The seeds with eliminating the air in jars and cups does not
grows whereby the seeds which were kept moist and let it in the air grows healthily. By
this we learn that plants need air to survive.
REFERENCES
Brach , A. 4.16.2004.Ask A Scientist.
http://www.newton.dep.anl.gov/askasci/bot00/bot00464.htm. Acessed on 7
February 2009.
Carter, S. 3 November 2004. Photosynthesis.
http://biology.clc.uc.edu/Courses/bio104/photosyn.htm. Accessed on 7
February 2009.
Animal Digestion (2004).
http://www.kidcyber.com.au/topics/anidigestion.htm. Acessed on 7 February
2009.
Do different types of water affect plant growth? 2005.
http://wiki.answers.com/Q/Do_different_types_of_water_affect_plant_growth
. Accessed on 9 February 2009.
Questions and Answers for the Game "Do You Know?"
http://www.state.nj.us/pinelands/infor/curric/pinecur/dyk.htm. Acessed on 9
February 2009.
PDF eBooks. (2006). Adapted from the 2006 Grade 4 Science Immersion Unit
http://www.fastplants.org/pdf/activities/producerpower.pdf. Acessed on 9 February
2009.