Which of the following is not a difference between the autonomic nervous system and the somatic nervous system?
a. the number and types of neurotransmitters.
b. the presence of ganglia.
c. the number of motor neurons.
d. the involvement of the spinal cord.

It is the involvement of the spinal cord.

Explanation: Whether message via the nerve impulse is voluntary(somatic nervous system) or involuntary (autonomous nervous system) it has to pass through the spinal cord to the brain. Basic function of the spinal cord is to receive sensory information from body parts to the brain and from the brain to the body.

step 1 ammonium can be absorbed by plants, but some is converted into nitrates which are better for plants to absorb. this is called nitrification. 2. step 2 the deer eats the plants and uses the nitrogen-containing proteins for cell growth. 3. step 3 bacteria in the soil conduct nitrogen fixation to convert nitrogen gas from the atmosphere into ammonium. 4. step 4 some of the nitrates are absorbed back into plants, but denitrification breaks down the nitrates into nitrogen gas released back into the atmosphere. 5. step 5 nitrogen is found in the urine, which gets broken down into ammonium through the process of ammonification. 6. step 6 plants absorb the ammonium and begin assimilation, the process to add the nitrogen to protein.