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1
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Very small living things that you cannot see. Some kinds cause diseases.
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3
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Doing something because you want or choose to do it, not because you have to do it.
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4
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Any of numerous small disk-shaped bodies found in the blood of humans and any other animal.
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5
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A tiny living thing that causes disease. Viruses,bacteria, and other germs are pathogens.
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7
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A part of blood that reacts to particular poisonous substances by destroying them.
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2
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Unintentional and not by one’s own choice.
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6
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A tiny living organism that lives in other living things and causes diseases.
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8
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A condition that causes harm to a person's health.
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