Answer:
The production of toxic chemicals
Thorns
Explanation:
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The answer is C. Summer solstice. The sun is at its northernmost when it passes the first solstice after the vernal equinox on June 21 or 22, which is in the summer time.
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Answer:
Neurotransmitter are produced by nervous system while hormones are produced by endocrine glands
Neurotransmitter are secreted in synaptic cleft while hormone are secreted to blood
Neurotransmitter are quick and short in action while hormones are slower and last longer
Similarities, they are both chemical messengers