The ultimate source of energy for most life on Earth is:

A) oxygen.
B) the sun.
C) the metabolic processes found in all living things.
D) heat from the Earth.


Answer: B

Biology & Microbiology

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Charles Darwin was the first person to discover the hormone auxin

Indicate whether the statement is true or false.

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How can radial symmetry be an advantage to slow-moving or sessile marine organisms? What will be an ideal response?

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Which stimuli most directly causes the Venus flytrap to catch an insect?

a. gravity b. light c. touch d. scent e. sound

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