Which of the following definitions best describes niche? * a-The role or function of an organism or species in an ecosystem

b-All the organisms that live in a place together with their nonliving environment

c-Where an organism lives, including the biotic and abiotic factors that affect it

d-Assemblage of different populations that live together in a defined area,​

plant because they survive by water, sunlight, ex.

explanation:

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.

to figure the total magnification of an image that you are viewing through the microscope is really quite simple. to get the total magnification take the power of the objective (4x, 10x, 40x) and multiply by the power of the eyepiece, (usually 10x)