What might explain the real-world results, show in
the graph to the right, for one class of twenty
students? Check all that apply.
Fourteen people were immune at the
beginning
Noninfected individuals never came into
contact with infected individuals.
A few people were immune at the beginning,
and other people never came into contact
with the disease.
The people who became sick got better
before they could pass on the disease.

A.Fourteen people were immune at the beginning.

C.A few people were immune at the beginning, and other people never came into contact with the disease.

D.The people who became sick got better before they could pass on the disease.

Explanation:

the sphincter muscles at the end of the digestive tract is the anus.

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.