Biology

What is another name for the portion of Earth that sustains life?

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Which animals have gills?
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What is the study of interrelationships of animals and plants to their environment?
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What color is a polar bear's skin?
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What nerve tissue transmits light signals from your eye lens to the brain?
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Which of these words means "to find a new home"?
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What group of animals has hollow bodies and stinging cells?
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How many legs do insects have?
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Where are the carpals found in humans?
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