All organisms must be able to obtain nutrients from their environment. which of the following terms describes the process of one organism killing another organism in order to obtain nutrients? a. predation b. secondary trophism c. symbiosis d. coevolution

A. Predation

Predation is a biological interaction between a predator and prey, in which one organism kills the another organism, in order to obtain food and energy. Predators exhibit characteristics such as sharp teeth, claws and venom to capture their prey. They have sensitive sense organs to detect their prey present around them.

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.

the water is warmed up by the sun and then it evaporates into the atmosphere. the sunlight warms the water by its heat. water is then cooled down and condensation takes place. the water then finally returns back to the earth by the process of precipitation in the form of rain or ice.

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