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Charact. of Life
Question | Answer |
---|---|
a single living thing | organism |
smallest living thing | cell |
single cell | unicellular |
many cells | multicellular |
1 parent divides | asexual reproduction |
2 parents combine genes | sexual reproduction |
instructions for life | DNA |
how an organism uses energy | metabolism |
a change in the environment | stimulus |
an action caused by a stimulus | response |
internal balance | homeostasis |
change over time | evolution |