Answer:
Nicotine is a sympathomimetic stimulant that attaches to nicotinic acetylcholine receptors in the brain. Neuroplasticity within the brain's reward system occurs as a result of long-term nicotine use, leading to nicotine dependence.
Explanation:
BRAINLEIST PLZZZ
Fruits, Veggies, Grains, Dairy, and Protein.
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It would be your third option. because if you look at the reproductive system both the sperm and the egg carry different amounts of genetic information.