How do living things interact

Final (complete version )

Chapter 3 lesson 1

How many habitats can u find in this picture ?

EcoSystem

An ecosystem has many habitats for many animals .

Can you only see living things in the ecosystem ?

Sun

Water

soil

Air

a place where living 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

Ecosystem

Living things

Non-Living things

• Animals • Plants

• Water• Sun & air• Soil

Let’s make our own ecosystem !!Put 2 living things + 2 non-living things in your

ecosystem

We know that All living things need :

Food Water Shelter

All living things need food to get energy.but where do they get their food from ?

Living things

Producers

Consumers

Decomposers

Produce their own food

Eat other animals or plants

Eat Dead animals or plants.

Where do plants get their food from ?

Plants produce their own food , using the sun’s

energy .

That’s why they’re called Producers

Producers All plants are producers.

Algae Water plants

grasstrees

Consumers

A panda eats plants 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 .

Dinosaurs were extinct along time ago, so we only saw their skeletons.

BUT, where did their body go ?

Decomposers • worm and bacteria feed on the dead bodies of

animals and plants .• They are called Decomposers.

Worms Bacteria

Fungus is also a

decomposer .

Decomposers feed on dead animals and

plants.

Decomposers

Decomposers like worms and bacteria break down the bodies of dead animals and plants, and return the nutrients back to the soil.

What would happen without decomposers ?

Without them, piles of dead plants and animals would

build up and cover the earth !!

Producer

Consumers

Decomposers

Let’s play a game !!(click the link below)

http://www.sheppardsoftware.com/content/animals/kidscorner/games/producersconsumersgame.swf

Producer

Consumers

Decomposers

All consumers get 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

Consumers Herbivor

e

Omnivore

Carnivore

There are 3 groups of consumers named according to what they eat !!

Eats both plants and animals

Only eats other Animals

Only eat plants

Carnivores

Carnivores only eat other animals.MEAT

Herbivores

Herbivores only eat plants.

PLANTS

Omnivores

Omnivores eat both plants and meat of other animals.

ALL

Let’s play a game (click the link below ) Game 1 : http://www.switchzoo.com/games/pleasedofeedtheanimals.htm

Game 2 : http://www.to14.com/game.php?id=4d486a3012bf4

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

An animal can be 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 PreyEagle Snake

Predator PreySnake Mouse

How many predators and 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.

The food chain

Show the flow of energy from one living organism to

another .

Energy

diesEnergy Energ

y Energ

y

When the lion dies the Decomposers will

breakdown the body and turn it into nutrients.

Energy

Nutrients

All food chains always Begin with a producer.

Food web In an 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 .

Interdependency: Every organism depends 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

Game 1 click link 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