Which of the following statements about coal is not true? A) Coal is relatively inexpensive to extract and obtain.
B) Coal is the most polluting of all the fossil fuels.
C) Coal is abundant in the United States.
D) Coal is difficult to ship and store for later use.

d

Explanation:

coal is difficult to ship and store for later use

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.