The incident direct exposure of solar irradiation will warm the temperature of oceanic water. When the water is too warm, the coral polyps expel the symbiotic associate that is algae (zooxanthellae) which is responsible for providing color to the polyps. When algal partner is expel out this results in coral bleaching. The white coral reef get exposed to the environment.
Also the coral reefs which grows in the shallow water are also susceptible for coral bleaching due to solar irradiation.
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.