Answer:
True
Explanation:
Hormonal shifts can be a cause for mood swings, <em>during teenage years the teens will experiment the production of estrogen (girls) and testosterone (boys) that will cause physical and emotional changes,</em> as the time pass by these mood swing normally become less common as hormones reach an equilibrium.
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Organelles exist within cells, which exist within tissues. Communities exist within ecosystems, which exist in the biosphere.
D is the answer to this question.
Answer: the urchin population will grow very large and the kelp will diminish
Explanation: