In order for organisms to survive in their environment, an ecosystem must provide the organism with all of the following except A. edible food.
B. drinkable water.
C. adequate shelter and space.
D. sedimentary rocks.

D. sedimentary rocks.

Explanation:

organisms rely on their environment to provide edible food, drinkable water, and adequate shelter and space. sedimentary rocks are no where in the line of must-haves for them to live.

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.