I am not 100% sure but I thinking it responds when pathogens enter the body because the immune system is meant to protect your body from illness.
Hello there,
The answer to your question is <span>mast
Hope this helps :))
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Stimuli (usually) activate one or more of the senses. Stimuli can be internal as well as external. Internal stimuli signal the state of the body. ... Some examples of internal stimuli: the feeling you describe as hunger, the churning sensation you experience when anxious or afraid.
The answer is definitely the first one, the reasons are: A.) Fertilizer helps plants grow faster and they help the plant produce more.
B. ) Pesticides kill harmful insects that would otherwise ravage the food supply.
C.) The easier it is to farm, more food you can make in a short amount of time. Allowing for higher food production.
