A frog's skin is permeable to oxygen and carbon dioxide. When a frog is swimming in pond water, in which directions will oxygen and carbon dioxide
diffuse?
from the frog's skin
into the water
from the water into
the frog's skin
A
oxygen
carbon dioxide
carbon dioxide and oxygen
B
с
oxygen
carbon dioxide
D
carbon dioxide and oxygen

A

Explanation: The answer to the question should be:

explanation:

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.