B. The brain reacts to excessive dopamine levels by increasing the number of dopamine receptors.
Answer: ecosystem
Explanation:
An ecosystem is a community involving several groups of organisms co-existing in the same place.it involves the interaction between the community and it's non living environment.in this Georgia backyard,the bees,lizard ,works etc are the biotic or living part of the ecosystem that co-exist together
The atoms should onky have same no. of protons+electrons.
Cholera is caused by the bacterium, Vibrio cholerae and produces CTX (cholera toxin, choleragen)...
