Answer:
Reduction in secondary pollutants
Explanation:
Reduction in secondary pollutants is not a possible consequence of global warming.
Antibiotics added to livestock feed have been found to increase their growth rate, reduce incidence of infection, reduces mortality and improve feed conversion ratio or feed efficiency.
Answer:
there is not enough oxygen for animal to turn to carbon.
Explanation:
Neurotransmitters, such as acetylcholine--the major neurotransmitter found in the human body, act over a short time and they are quickly removed from the synapse by enzymes (i.e. acetylcholinesterase which breaks down acetylcholine to acetyl-CoA and choline).

your answer is given below..
The environment is rich in infectious agents that transmit disease through pathogens.