Doctor Larry Young describes how neuropeptides can activate circuits that can change emotions and behaviors. ... A neuropeptides is a chain of amino acids that is released either into the blood where it activates receptors in our body, or directly into the brain where it can activate receptors in our brain.
Answer:
The correct answer will be option C- Convergent evolution.
Explanation:
The body shape of dolphins, sharks and penguins show similarity in structure sue to the same niche they inhabit which is the ocean.
All of them exhibit features which helped them survive in ocean-like streamlined bodies, fins and flippers. The dolphin, shark and penguins are not closely related but inherited similar characters (streamlined bodies, fins and flippers) due to the process of convergent evolution. These analogous features helped their survival in the same conditions.
Thus, option C- Convergent evolution is the correct answer.
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Answer:b
Explanation: using chemicals in stomach acid