
Ecosystems and Food Chains
Presentation
•
Science
•
3rd Grade
•
Easy
Standards-aligned
Benn Berkley
Used 45+ times
FREE Resource
6 Slides • 4 Questions
1
Ecosystems and Food Chains
By Mr. Berkley
2
What is an ECOSYSTEM?
An ecosystem is an area in which living and non-living organisms line together and interact with each other.
3
What makes up an ecosystem?
Producer - an organism that makes its own food naturally
Consumer - an organism that
Decomposer - all of the combined populations in an ecosystem (rainforest, grassland, desert, ocean)
4
Open Ended
What are some living and non-living organisms that your would find in an ocean? Name as many as you can think of.
5
Open Ended
What are some living and non-living organisms that your would find in a desert? Name as many as you can think of.
6
What are food chains?
A food chain is the relationship between organisms that eat other organisms and the organisms that they eat.
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The Three Members of the Food Chain
Producer - organisms that produce their own food (example: plants)
Consumer - organisms that eat other organisms to survive (examples: humans. horses, fish)
Decomposer - organisms that break down dead and decaying organisms (examples: mushrooms, bacteria, maggots)
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The Three Types of Eaters
Herbivore - consumer that eats plants (examples: cows, zebras, rabbits)
Carnivore - consumer that eats animals (examples: lions, tigers, sharks)
Omnivore - consumer that eats both plants AND animals (examples: humans, bears, raccoons)
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Multiple Choice
An owl eats organisms like mice, squirrels, and rabbits. An owl is a example of a
herbivore
carnivore
omnivore
producer
10
Multiple Choice
A tree grows with the help of sunlight, water, soil, and air. A tree is an example of a
producer
consumer
decomposer
omnivore
Ecosystems and Food Chains
By Mr. Berkley
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