Which of the following can lead to an increase of squirrels in a park A. increased emigration
B. increased immigration
C. a large number of predators
D. high competition for food

Increased immigration.

Explanation:

Immigration = moving TO and area

the cell cycle is the final answer! : )

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.