Some researchers have suggested that obesity is due to a change in "set point" in the brain that is related to the number of calories a person needs, therefore people eat more than they need and gain weight. permanently raising the set point would involve a permanent change in which of the following? a. the responseb. the stimulusc. the effectord. the sensor

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )

i'd have to say the answer is probable the second option "the geosphere interacting with the atmosphere"

because photosynthesis could not occur (apex)