This document discusses ecosystems and how living and non-living things interact within them. It defines key terms like producers, consumers, decomposers, food chains, and food webs. Producers (plants) produce their own food, consumers (animals) eat other organisms, and decomposers (fungi, bacteria) break down dead organisms, recycling nutrients. Food chains show energy transfer between organisms, while complex food webs connect multiple chains in an ecosystem. All organisms depend on each other for survival.
Can you onlysee living things in the ecosystem ?
Sun
7.
a place whereliving and non living things interact .
The ecosystem can be big like an ocean or small like a pond.
It can be wet like the sea or dry like the desert.
Ecosystem
Consumers
A panda eatsplants like
bamboo or animals like : fish
A lion eats other animals .
All animals can NOT make their own food like plants, they get their energy by
consuming (eating) other animals or plants .
All animals are called consumers .
15.
Dinosaurs were extinctalong time ago, so we only saw their skeletons.
BUT, where did their body go ?
16.
Decomposers
• worm andbacteria feed on the dead bodies of animals and
plants .
• They are called Decomposers.
Worms Bacteria
All consumersget energy by eating other animals or plants .
Some consumers only eat plants
Other consumers only eat animals
Others can eat both plants and animals
Plants
only
Animals
only
Animals
only
Let’s play agame
(click the link below )
Game 1 :
http://www.switchzoo.com/games/pleasedofeedtheanimals.htm
Game 2 :
http://www.to14.com/game.php?id=4d486a3012bf4
31.
Prey and predator
A consumer can be a predator or a prey.
Predator Prey
Consumers that eat the prey . Consumers that are eaten .
In these pictures the predators are :
• The Wild cat
• The Eagle
• The Cheetah
In these pictures the preys are :
• The Rabbit
• The Fish
• The Gazelle
32.
An animal canbe a prey and a predator too !!
In the first picture the snake was a prey , but in the 2nd picture it’s the predator .
Predator Prey
Eagle Snake
Predator Prey
Snake Mouse
33.
How many predatorsand preys can you find here ?
Predator Prey
Eagle Snake
Predator Prey
Eagle Snake
Snake Mouse
Predator Prey
Eagle Snake
Snake Mouse
Mouse Grasshopper
When the eagle dies the
Decomposers will breakdown the
body and turn it into nutrients.
34.
The food chain
Show the flow of energy from one living organism to another .
Energy
diesEnergyEnergyEnergy
When the lion dies the
Decomposers will breakdown the
body and turn it into nutrients.
Energy
Nutrients
Food web
Inan ecosystem you can see many animals
eating the Same plant or the same animal.
This will form a Food web made of many
Food chains connected together.
Food web :
Made up of many food
chains connected together .
38.
Interdependency: Every organismdepends on other organisms to survive.
What would happen if one living organism disappeared ?
Example : if the grass didn’t get any sunlight.
Grass dies > grasshopper dies > rat dies >snake dies > hawk dies
39.
Game 1 clicklink
http://www.sheppardsoftware.com/content/animals/kidscorner/games/foodchaingame.swf
Game 2 click link
https://ecokids.ca/swf-files/gamesPage/chain_reaction.swf
Game 3 (food web) click link
http://www.scholastic.com/kids/ecosystems/line_experiment14.swf
Let’s play some games