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

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Conservationists to restore ecosystems. which activity will positively affect the abiotic conditions of an ecosystem?

Which base is found only in rna? ribose othymine ouracil o deoxyribose detecteet