In natural systems, nitrogen is lost by denitrification. predict which of the following processes will be most responsible for replacing lost nitrogen in an ecosystem.

a) erosion

b) fixation

c) combustion

d) weathering

Providing immunity by injecting the body with a weakened form a pathogen is known as

The mitochondrion functions lipid storage protein synthesis photosynthesis dna replication atp synthesis

For each of the following, decide whether the statement describes photosynthesis, cellular respiration, or both. releases energy in the form of atp. stores energy in glucose molecules. performed by producers. performed by consumers.