Bio_006_USA_FY21 Question: 1-12 Which of the following conditions is least likely to have an effect on natural selection in a species of sheep that are geographically isolated on an island?
O available niches
O existing predators
0
chromosome number
available food resources
11
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о

energy and particles

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.