Which statement about energy is TRUE?
A. Energy is not recycled, but it is converted from one form to another.
B. Producers eat other organisms to obtain energy.
C. Consumers make sugar through photosynthesis.
D. Some types of bacteria can form carbon dioxide that plants and animals need.

A. Energy is not recycled, but it is converted from one form to another.

Explanation:

Energy cannot be recycled in ecosystems and the habitat requires a constant entry of energy to sustain it. Energy is rather transformed from one form to another at each level of the food chain or food web in an ecosystem.

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.

i think the answer would be d