The prefix 'bio-' means:

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Multiple Choice

The prefix 'bio-' means:

Explanation:
Understanding common prefixes helps you infer meaning in many scientific terms. The prefix bio- comes from Greek bios, meaning life. When you see bio- at the start of a word, it signals something related to living things or life itself. That’s why words like biology (the study of life), biosphere (the regions of Earth where life exists), and biography (a life story) all hinge on life. The other options point to different ideas: hydro- for water, geo- for earth, and chrono- (or tempor-) for time. So the best match for bio- is life or living.

Understanding common prefixes helps you infer meaning in many scientific terms. The prefix bio- comes from Greek bios, meaning life. When you see bio- at the start of a word, it signals something related to living things or life itself. That’s why words like biology (the study of life), biosphere (the regions of Earth where life exists), and biography (a life story) all hinge on life. The other options point to different ideas: hydro- for water, geo- for earth, and chrono- (or tempor-) for time. So the best match for bio- is life or living.

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