Drugs, smoking, and exercise. I hope this helps you! <span />
Here's a chart. Not sure what your choices are though.
1) d. mitochondria
These are found in both plant and animal cells.
2) b. fluid
The statement which best explains the origin of life on Earth is that r<span>eproducing molecules evolved into living molecules by biological processes.
RNA is the precursor of all life on Earth, and today's life descends from RNA world.
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