Biology

What gives red blood cells their color?

More Questions from Biology
What is the study of interrelationships of animals and plants to their environment?
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A group of which insects is called an army or a colony?
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What is the outside covering of a plant's root called?
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Which of the following organs is not used during digestion?
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What is needed to make proteins?
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What does a king cobra use to immobilize and kill its prey?
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Which pair of animal species and type is correct?
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What are all the living and non-living things in one area called?
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