Asap
what is the purpose of the chemical transmitter in a control system?
to decrease the internal stimulus
to enter a cell at a specific receptor site
to neutralize the stimulus at the plasma membrane
cause an internal cell reaction which maintains homeostasis
to increase the external stimulus acting on the cell
(answer can be more than one)

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.