- DDT is a pesticide that was widely used for agricultural and mosquito control purposes until it was banned in 1972 due to its accumulation in bird species causing death, nervous system damage, and reproductive failure through thinning eggshells.
- DDE is a metabolite of DDT that is fat soluble and bioaccumulates in organisms and biomagnifies up food chains, reaching high levels in birds of prey like ospreys. This can cause reproductive failure by thinning eggshells and preventing embryo development.
- The impact of DDE on bird reproduction is measured by analyzing eggs for DDE content and eggshell thickness, with increased DDE correlating to thinner shells and decreased reproductive success.
Middle School Science - an introduction to bioaccumulation and biomagnification in an ecosystem. Using DDT as an example and organic controls that can be used instead.
Some chemicals, both natural and man-made, can interfere with the hormonal system. They are called 'endocrine disruptors’. The most controversial issue is whether low level exposures to such chemicals can have adverse effects. Have endocrine disruptors affected wild life and our hormonal system? How much do we know so far?
Middle School Science - an introduction to bioaccumulation and biomagnification in an ecosystem. Using DDT as an example and organic controls that can be used instead.
Some chemicals, both natural and man-made, can interfere with the hormonal system. They are called 'endocrine disruptors’. The most controversial issue is whether low level exposures to such chemicals can have adverse effects. Have endocrine disruptors affected wild life and our hormonal system? How much do we know so far?
Endocrine disruptors, sometimes also referred to as hormonally active agents, endocrine-disrupting chemicals, or endocrine-disrupting compounds are chemicals that can interfere with endocrine (or hormonal) systems. These disruptions can cause cancerous tumors, birth defects, and other developmental disorders.
Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollutants, the components of pollution, can be either foreign substances or naturally occurring contaminants. Pollution is classed as point source or nonpoint source. There are many types of ocean pollutants that endanger ocean life. Some of them are more obvious than others, but all contribute to an unhealthy ocean and many times, the death of its creatures
It is PPT by swapnil lahane on biodiversity
for any one .
It is information about worlds biodiversity and indian Ecosystem.
That PPT useful for students of Engg. and Medical for their projects.
Endocrine disruptors, sometimes also referred to as hormonally active agents, endocrine-disrupting chemicals, or endocrine-disrupting compounds are chemicals that can interfere with endocrine (or hormonal) systems. These disruptions can cause cancerous tumors, birth defects, and other developmental disorders.
Pollution is the introduction of contaminants into the natural environment that cause adverse change. Pollutants, the components of pollution, can be either foreign substances or naturally occurring contaminants. Pollution is classed as point source or nonpoint source. There are many types of ocean pollutants that endanger ocean life. Some of them are more obvious than others, but all contribute to an unhealthy ocean and many times, the death of its creatures
It is PPT by swapnil lahane on biodiversity
for any one .
It is information about worlds biodiversity and indian Ecosystem.
That PPT useful for students of Engg. and Medical for their projects.
what is the best method to sell pi coins in 2024DOT TECH
The best way to sell your pi coins safely is trading with an exchange..but since pi is not launched in any exchange, and second option is through a VERIFIED pi merchant.
Who is a pi merchant?
A pi merchant is someone who buys pi coins from miners and pioneers and resell them to Investors looking forward to hold massive amounts before mainnet launch in 2026.
I will leave the telegram contact of my personal pi merchant to trade pi coins with.
@Pi_vendor_247
US Economic Outlook - Being Decided - M Capital Group August 2021.pdfpchutichetpong
The U.S. economy is continuing its impressive recovery from the COVID-19 pandemic and not slowing down despite re-occurring bumps. The U.S. savings rate reached its highest ever recorded level at 34% in April 2020 and Americans seem ready to spend. The sectors that had been hurt the most by the pandemic specifically reduced consumer spending, like retail, leisure, hospitality, and travel, are now experiencing massive growth in revenue and job openings.
Could this growth lead to a “Roaring Twenties”? As quickly as the U.S. economy contracted, experiencing a 9.1% drop in economic output relative to the business cycle in Q2 2020, the largest in recorded history, it has rebounded beyond expectations. This surprising growth seems to be fueled by the U.S. government’s aggressive fiscal and monetary policies, and an increase in consumer spending as mobility restrictions are lifted. Unemployment rates between June 2020 and June 2021 decreased by 5.2%, while the demand for labor is increasing, coupled with increasing wages to incentivize Americans to rejoin the labor force. Schools and businesses are expected to fully reopen soon. In parallel, vaccination rates across the country and the world continue to rise, with full vaccination rates of 50% and 14.8% respectively.
However, it is not completely smooth sailing from here. According to M Capital Group, the main risks that threaten the continued growth of the U.S. economy are inflation, unsettled trade relations, and another wave of Covid-19 mutations that could shut down the world again. Have we learned from the past year of COVID-19 and adapted our economy accordingly?
“In order for the U.S. economy to continue growing, whether there is another wave or not, the U.S. needs to focus on diversifying supply chains, supporting business investment, and maintaining consumer spending,” says Grace Feeley, a research analyst at M Capital Group.
While the economic indicators are positive, the risks are coming closer to manifesting and threatening such growth. The new variants spreading throughout the world, Delta, Lambda, and Gamma, are vaccine-resistant and muddy the predictions made about the economy and health of the country. These variants bring back the feeling of uncertainty that has wreaked havoc not only on the stock market but the mindset of people around the world. MCG provides unique insight on how to mitigate these risks to possibly ensure a bright economic future.
how to sell pi coins effectively (from 50 - 100k pi)DOT TECH
Anywhere in the world, including Africa, America, and Europe, you can sell Pi Network Coins online and receive cash through online payment options.
Pi has not yet been launched on any exchange because we are currently using the confined Mainnet. The planned launch date for Pi is June 28, 2026.
Reselling to investors who want to hold until the mainnet launch in 2026 is currently the sole way to sell.
Consequently, right now. All you need to do is select the right pi network provider.
Who is a pi merchant?
An individual who buys coins from miners on the pi network and resells them to investors hoping to hang onto them until the mainnet is launched is known as a pi merchant.
debuts.
I'll provide you the Telegram username
@Pi_vendor_247
Financial Assets: Debit vs Equity Securities.pptxWrito-Finance
financial assets represent claim for future benefit or cash. Financial assets are formed by establishing contracts between participants. These financial assets are used for collection of huge amounts of money for business purposes.
Two major Types: Debt Securities and Equity Securities.
Debt Securities are Also known as fixed-income securities or instruments. The type of assets is formed by establishing contracts between investor and issuer of the asset.
• The first type of Debit securities is BONDS. Bonds are issued by corporations and government (both local and national government).
• The second important type of Debit security is NOTES. Apart from similarities associated with notes and bonds, notes have shorter term maturity.
• The 3rd important type of Debit security is TRESURY BILLS. These securities have short-term ranging from three months, six months, and one year. Issuer of such securities are governments.
• Above discussed debit securities are mostly issued by governments and corporations. CERTIFICATE OF DEPOSITS CDs are issued by Banks and Financial Institutions. Risk factor associated with CDs gets reduced when issued by reputable institutions or Banks.
Following are the risk attached with debt securities: Credit risk, interest rate risk and currency risk
There are no fixed maturity dates in such securities, and asset’s value is determined by company’s performance. There are two major types of equity securities: common stock and preferred stock.
Common Stock: These are simple equity securities and bear no complexities which the preferred stock bears. Holders of such securities or instrument have the voting rights when it comes to select the company’s board of director or the business decisions to be made.
Preferred Stock: Preferred stocks are sometime referred to as hybrid securities, because it contains elements of both debit security and equity security. Preferred stock confers ownership rights to security holder that is why it is equity instrument
<a href="https://www.writofinance.com/equity-securities-features-types-risk/" >Equity securities </a> as a whole is used for capital funding for companies. Companies have multiple expenses to cover. Potential growth of company is required in competitive market. So, these securities are used for capital generation, and then uses it for company’s growth.
Concluding remarks
Both are employed in business. Businesses are often established through debit securities, then what is the need for equity securities. Companies have to cover multiple expenses and expansion of business. They can also use equity instruments for repayment of debits. So, there are multiple uses for securities. As an investor, you need tools for analysis. Investment decisions are made by carefully analyzing the market. For better analysis of the stock market, investors often employ financial analysis of companies.
what is the future of Pi Network currency.DOT TECH
The future of the Pi cryptocurrency is uncertain, and its success will depend on several factors. Pi is a relatively new cryptocurrency that aims to be user-friendly and accessible to a wide audience. Here are a few key considerations for its future:
Message: @Pi_vendor_247 on telegram if u want to sell PI COINS.
1. Mainnet Launch: As of my last knowledge update in January 2022, Pi was still in the testnet phase. Its success will depend on a successful transition to a mainnet, where actual transactions can take place.
2. User Adoption: Pi's success will be closely tied to user adoption. The more users who join the network and actively participate, the stronger the ecosystem can become.
3. Utility and Use Cases: For a cryptocurrency to thrive, it must offer utility and practical use cases. The Pi team has talked about various applications, including peer-to-peer transactions, smart contracts, and more. The development and implementation of these features will be essential.
4. Regulatory Environment: The regulatory environment for cryptocurrencies is evolving globally. How Pi navigates and complies with regulations in various jurisdictions will significantly impact its future.
5. Technology Development: The Pi network must continue to develop and improve its technology, security, and scalability to compete with established cryptocurrencies.
6. Community Engagement: The Pi community plays a critical role in its future. Engaged users can help build trust and grow the network.
7. Monetization and Sustainability: The Pi team's monetization strategy, such as fees, partnerships, or other revenue sources, will affect its long-term sustainability.
It's essential to approach Pi or any new cryptocurrency with caution and conduct due diligence. Cryptocurrency investments involve risks, and potential rewards can be uncertain. The success and future of Pi will depend on the collective efforts of its team, community, and the broader cryptocurrency market dynamics. It's advisable to stay updated on Pi's development and follow any updates from the official Pi Network website or announcements from the team.
Poonawalla Fincorp and IndusInd Bank Introduce New Co-Branded Credit Cardnickysharmasucks
The unveiling of the IndusInd Bank Poonawalla Fincorp eLITE RuPay Platinum Credit Card marks a notable milestone in the Indian financial landscape, showcasing a successful partnership between two leading institutions, Poonawalla Fincorp and IndusInd Bank. This co-branded credit card not only offers users a plethora of benefits but also reflects a commitment to innovation and adaptation. With a focus on providing value-driven and customer-centric solutions, this launch represents more than just a new product—it signifies a step towards redefining the banking experience for millions. Promising convenience, rewards, and a touch of luxury in everyday financial transactions, this collaboration aims to cater to the evolving needs of customers and set new standards in the industry.
how to sell pi coins at high rate quickly.DOT TECH
Where can I sell my pi coins at a high rate.
Pi is not launched yet on any exchange. But one can easily sell his or her pi coins to investors who want to hold pi till mainnet launch.
This means crypto whales want to hold pi. And you can get a good rate for selling pi to them. I will leave the telegram contact of my personal pi vendor below.
A vendor is someone who buys from a miner and resell it to a holder or crypto whale.
Here is the telegram contact of my vendor:
@Pi_vendor_247
The Evolution of Non-Banking Financial Companies (NBFCs) in India: Challenges...beulahfernandes8
Role in Financial System
NBFCs are critical in bridging the financial inclusion gap.
They provide specialized financial services that cater to segments often neglected by traditional banks.
Economic Impact
NBFCs contribute significantly to India's GDP.
They support sectors like micro, small, and medium enterprises (MSMEs), housing finance, and personal loans.
Currently pi network is not tradable on binance or any other exchange because we are still in the enclosed mainnet.
Right now the only way to sell pi coins is by trading with a verified merchant.
What is a pi merchant?
A pi merchant is someone verified by pi network team and allowed to barter pi coins for goods and services.
Since pi network is not doing any pre-sale The only way exchanges like binance/huobi or crypto whales can get pi is by buying from miners. And a merchant stands in between the exchanges and the miners.
I will leave the telegram contact of my personal pi merchant. I and my friends has traded more than 6000pi coins successfully
Tele-gram
@Pi_vendor_247
when will pi network coin be available on crypto exchange.DOT TECH
There is no set date for when Pi coins will enter the market.
However, the developers are working hard to get them released as soon as possible.
Once they are available, users will be able to exchange other cryptocurrencies for Pi coins on designated exchanges.
But for now the only way to sell your pi coins is through verified pi vendor.
Here is the telegram contact of my personal pi vendor
@Pi_vendor_247
how to swap pi coins to foreign currency withdrawable.DOT TECH
As of my last update, Pi is still in the testing phase and is not tradable on any exchanges.
However, Pi Network has announced plans to launch its Testnet and Mainnet in the future, which may include listing Pi on exchanges.
The current method for selling pi coins involves exchanging them with a pi vendor who purchases pi coins for investment reasons.
If you want to sell your pi coins, reach out to a pi vendor and sell them to anyone looking to sell pi coins from any country around the globe.
Below is the contact information for my personal pi vendor.
Telegram: @Pi_vendor_247
If you are looking for a pi coin investor. Then look no further because I have the right one he is a pi vendor (he buy and resell to whales in China). I met him on a crypto conference and ever since I and my friends have sold more than 10k pi coins to him And he bought all and still want more. I will drop his telegram handle below just send him a message.
@Pi_vendor_247
Turin Startup Ecosystem 2024 - Ricerca sulle Startup e il Sistema dell'Innov...Quotidiano Piemontese
Turin Startup Ecosystem 2024
Una ricerca de il Club degli Investitori, in collaborazione con ToTeM Torino Tech Map e con il supporto della ESCP Business School e di Growth Capital
how to sell pi coins on Bitmart crypto exchangeDOT TECH
Yes. Pi network coins can be exchanged but not on bitmart exchange. Because pi network is still in the enclosed mainnet. The only way pioneers are able to trade pi coins is by reselling the pi coins to pi verified merchants.
A verified merchant is someone who buys pi network coins and resell it to exchanges looking forward to hold till mainnet launch.
I will leave the telegram contact of my personal pi merchant to trade with.
@Pi_vendor_247
1. Opening Questions
• Name two kinds of bias.
• Name three sources of bias.
• What are some important aspects of DDT?
2. Lesson 1 Review Points
• Using Science as Evidence
– When science is used as evidence it is important to
identify possible sources of bias.
– Bias may be due to sampling bias or measurement
bias.
• Background of DDT
– DDT is a pesticide used for mosquito control and
pest control in agricultural crops.
– DDT accumulation in some bird species resulted in
death, nervous system damage, and reproductive
failure.
– As a result DDT was banned in the United States in
1972.
3. What are some sources of bias?
• Applying the results of a study too broadly
(generalizing)
• Taking research results out of context
• Not taking a random sample
• Taking too small of a sample
• Measurement error
6. In the body of an animal, DDT is changed
(metabolized) to DDE.
DDE dissolves in fat, not in water, and is
stored in fatty tissues. Thus, DDE tends to
remain in the body and can cause several
problems.
7. DDE: Kinds of Damage
• Reproductive failure (in birds- eggshell
thinning)
• Immune system problems
• Nervous system damage
• Death
8. How does DDT move into
lakes, streams and oceans?
9. After DDT is applied, some DDT volatizes, some
remains on the plant, and some washes off the
plant into the soil, eventually making its way to a a
stream, river, or lake.
The DDT that remains on the leaves of plants may
be ingested by primary consumers such as
insects and rodents.
DDT that has washed into a waterbody, remains in
the sediment or is consumed by bottom-feeding
organisms or absorbed by fish gills and skin.
11. YES
DDT is still used in some countries
for insect control on crops.
In countries where mosquitoes carry
malaria, DDT is currently used for
mosquito control.
13. Food Web = A summary of the feeding
relationships within an ecological
community.
ORGANIC DEBRIS
Osprey
Water Plants
Sucker
Bay
Shrimp
Trout
Plankton
Silverside
14. Food Chain = One thread of the food web
ORGANIC DEBRIS
Osprey
Large Mouth Bass
Crayfish
15. Cast of Food Web Characters
• Tertiary Consumers –
Animals that eat animals that
eat animals
• Secondary Consumers –
Animals that eat animals that
eat plants
• Primary Consumers –
Animals that eat plants
• Primary Producers – Plants
and Phytoplankton:
organisms using the sun for
energy
16. Why is food web knowledge
important for understanding the
impact of DDT on ospreys and
eagles?
17. Ospreys and eagles are tertiary consumers
and this makes them particularly vulnerable
to DDT because of
bioaccumulation and biomagnification.
19. Bioaccumulation = the accumulation of a
contaminant or toxin in or on an organism
from all sources (e.g., food, water, air).
An increase in the concentration of a chemical in a biological
organism over time, compared to the chemical's
concentration in the environment. Compounds accumulate in
living things any time they are taken up and stored faster
than they are broken down (metabolized) or excreted.
21. Biomagnification = the increase in
concentration of toxin as it passes through
successive levels of the food web
DDE accumulates at higher levels in organisms that are
higher in the food chain
22. Biomagnification of a DDE in Aquatic
Environment
Tertiary Consumer 3-76 µg/g ww
(fish eating birds)
Level Amount of DDE in Tissue
Secondary Consumers 1-2 µg/g ww
(large fish)
Primary Consumers
(small fish)
0.2-1.2 µg/g ww
Primary Producers
(algae and aquatic
plants)
0.04 µg/g ww
24. Osprey Food Web
Large Mouth Bass
Crayfish
Plant material and algae
3-76 µg/g ww
1-2 µg/g ww
0.2- 1.2 µg/g ww
0.04 µg/g ww
DDE Concentration
Osprey
25. Units of Measurement
1 gram = 1000 milligrams (mg) = 1,000,000 micrograms (µg)
microgram (µg) = one millionth of a gram
To describe concentrations: µg/g = number of micrograms
(of toxin) per gram (of tissue)
2 µg/g DDE in egg content means there is 2 parts of DDE in
1,000,000 parts of an egg contents
ww or wet weight refers to the fresh weight of animal tissue.
dw or dry weight refers to the weight of animal tissue after it has
been dried in an 65°C oven to remove all the water.
26. The Effects of DDE on Reproduction
Species Effect on
Reproduction
DDE: Critical
Concentration
(measured in egg contents)
Bald Eagle None < 3µg/g 1
Bald Eagle Failure 16 µg/g 1
Osprey Failure 17.6 µg/g 2
1. Wiemeyer, S.N. et al., 1984. Organochlorine pesticide, polychlorobiphenyl, and mercury residues in bald eagles,
1969-1979, and their relationship to shell thinning and reproduction. Arch. Environ. Contam. Toxicol., 13, 529.
2. Johnson, D.R. et al., 1975. DDT and PCB levels in Lake Coeur d’Alene, Idaho osprey eggs, Bull. Environ. Contam.
Toxicol., 13, 401.
27. High levels of DDE cause the female ospreys to
lay eggs with thin eggshells.
Thin eggshells have a greater chance of
breaking, leading to embryo death.
With high levels of DDE, female ospreys can
also lay eggs that contain high enough
concentration of DDE to prevent embryo
development.
28. How is the impact of
DDE on osprey and
eagle reproduction
measured?
29. One Method for Measuring the Impact of
DDE on Osprey Reproduction
• Collect eggs from abandoned osprey nests.
• Measure the thickness of the eggshells.
• Measure the amount of DDE in the egg.
• Determine the association between eggshell
thickness and DDE residue.
31. If increased DDE concentrations causes
increased eggshell thinning, how would
you draw a graph showing the
relationship between eggshell thinning
and DDE concentration?
32. Relationship Between DDE Concentrations and Eggshell
Thickness
0.44
0.45
0.46
0.47
0.48
0.49
0.5
0.51
0.52
0 1 2 3 4 5 6
DDE Concentration
Eggshell
Thickness
low concentrations high concentration
normal
thin
33. If DDE has no impact on eggshell
thickness, what relationship would you
expect to see between DDE levels and
eggshell thickness?
34. Relationship Between DDE Concentrations and Eggshell
Thickness
0
0.1
0.2
0.3
0.4
0.5
0.6
0 2 4 6 8 10 12
DDE Concentration
Eggshell
Thickness
high concentration
low concentration
normal
thin
35. If increased levels of DDE are
associated with increased eggshell
thickness, how would you make a graph
showing the relationship between
eggshell thickness and DDE
concentration?
36. Relationship Between DDE Concentrations and
Eggshell Thickness
0.4
0.45
0.5
0.55
0.6
0.65
0 1 2 3 4 5 6 7 8
DDE Concentration
Eggshell
Thickness
high concentration
low concentration
normal
thin
37. DDE reduces reproductive rates at
moderate concentrations. At high
concentrations it causes total
reproductive failure.
How would you make a graph
showing the relationship between
DDE concentration and reproductive
success?
38. Relationship Between DDE Concentrations and Eggshell
Thickness
0
20
40
60
80
100
0 2 4 6 8 10 12
DDE Concentration
Reproductive
Success
high concentration
low concentration
high
low