Scientists prove their hypothesis is true about Scientists can never "prove" their hypotheses are true, because some future experiment, possibly using new technology not currently available, might show the hypothesis to be false after all.
Answer:
Cellular organization.
Reproduction.
Metabolism.
Homeostasis.
Heredity.
Response to stimuli.
Growth and development.
Adaptation through evolution.
Explanation:
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A biotic factor is all of the students in the classroom.
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Poof just like that
everyone
gone
forever
lol
but in all seriousness, human life would cease to exist.