Biology

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

More Questions from Biology
What is the outer skeleton of organisms such as spiders and insects called?
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Which of these body systems helps your body keep its shape and gives protection?
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Which of these is a sense that humans are known to have?
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Which human body system breaks down food?
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What type of behavior is passed on from generation to generation?
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What substance, found in food, helps move wastes through the body?
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What color is a polar bear's skin?
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What group of animals do snails, slugs and octopuses belong to?
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