Real Life- Interruption of Food Chains

This picture shows a...

• sea

• bridge

• dammed river

A manmade lake is a(n) _______________ body of water.

• artificial

• natural

When the Caroni River was dammed, it flooded an enormous area and created a manmade lake.

• TRUE

• FALSE

When a river is dammed, animals ARE NOT affected.

• TRUE

• FALSE

When a food chain is interrupted, ...

• only animals are affected.

• plants and animals are affected

• only plants can be affected

When predators are removed from a food chain, the population of primary consumers...

• decreases

• increases

• stays the same

When wolves disappeared from Yellowstone National Park during the 1930s,

• elk disappeared

• elk ate too many plants and trees

• elk felt sad

In Yellowstone, wolves are necessary to...

• scare people.

• have more tourists.

• keep the balance in its ecosystem.

Ants can destroy a forest.

• TRUE

• FALSE

Which of these is a WEASEL?

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• 
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