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6 Cards in this Set
- Front
- Back
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Why do birds need sharp eyes? |
to spot their food |
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What is the purpose of an insect's simple eyes? |
Simple eyes help insects to be aware of changes in light. |
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What is the purpose of an insect's compound eyes? |
Compound eyes help them to see in many directions at the same time. |
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What do many animals have on the back of their eyeballs thelp them see at night? |
a layer of cells called the tapetum |
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What causes an animal's eyes to look as if they glow in the dark? |
The tapetum layer reflects light back to the light source. |
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Why do butterflies, bees, and birds need to distinguish color? |
to help them find their food and mates |
