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Biology
What type of gas is provided by trees to help us breathe?
Biology
What type of gas is provided by trees to help us breathe?
Oxygen
Nitrogen
Carbon Dioxide
Helium
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Which of these plants is a conifer?
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What is a hominid?
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What is whole blood minus the cells called?
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Which of the following is a small organism that can make your body sick?
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Renin comes from what body organ?
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What insect looks like a twig on a branch, bush or tree?
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What are the small bones that make up a backbone called?
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Which of these animals lives in the Arctic?
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