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Why might these trees only secrete nectar on young leaves rather than larger more mature leaves?
Dopamine
A neurotransmitter associated with movement, attention, learning, and the brain's pleasure and reward system.
Addictive Drug
A substance that leads to compulsive use, despite harmful consequences, by altering the brain's natural reward pathways.
Illicit Drugs
Substances whose production, sale, or use is prohibited by law.
Nonsmoking Peers
Individuals in a social group who choose not to smoke cigarettes or use tobacco products.
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