Answer:
Every living organism is made up of carbon, nitrogen, and phosphates. Nitrogen and carbon are found in amino acids which make up proteins. Phosphates make up DNA and ATP.
Explanation:
A) P: tissue, Q: organ, R: organ system, S: cell
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Your answer is D. Hope this helps!
Answer:
In primary succession, newly formed rock is colonized by living things for the first time.
Explanation:
In secondary succession an area that was previously occupied by living things is Disturbed then recolonized following the disturbance