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Feeding Relationships. A food chain shows a simple feeding relationship. Sun → All food chains start with the sun. Feeding Relationships. A food chain shows a simple feeding relationship. Sun → grass →. Feeding Relationships. A food chain shows a simple feeding relationship.

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feeding relationships
Feeding Relationships
  • A food chain shows a simple feeding relationship.

Sun →

  • All food chains start with the sun
feeding relationships2
Feeding Relationships
  • A food chain shows a simple feeding relationship.

Sun → grass →

feeding relationships3
Feeding Relationships
  • A food chain shows a simple feeding relationship.

Sun → grass → rabbit →

feeding relationships4
Feeding Relationships
  • A food chain shows a simple feeding relationship.

Sun → grass → rabbit → fox

slide6

carbon dioxide from the air

energy from

sunlight

(or light)

water from

the roots

food

transported to the

rest of the plant

slide7

Photosynthesis

carbon dioxide from the air

energy from

sunlight

(or light)

water from

the roots

food

transported to the

rest of the plant

because these animals are the first to take the food energy from the plants
Because these animalsare thefirst to takethe food energyfrom the plants,

They are called primaryconsumers

slide18
So far this is a straightforward food chain
  • Sun → aphid → ladybird

But in reality it is more complicated than that

slide22

What will eat the frog?

What do you think the frog eats?

slide28

No frogs.

More crickets

slide31

..and so on. Numbers of each species have an effect on the numbers of the other species in the web.

slide32
Use the food web worksheet to predict what might happen in the following situations:
  • A) There is very little rain and much of the Marsh Grass and Cattail die off.
  • B) Humans nearby bring cats into the area.
  • C) The frogs eats some poisoned slugs from a garden
slide33

This powerpoint was kindly donated to www.worldofteaching.com

http://www.worldofteaching.com is home to over a thousand powerpoints submitted by teachers. This is a completely free site and requires no registration. Please visit and I hope it will help in your teaching.

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