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1. How is salinity affected when melting increases and when precipitation increases.

Note that a sharp change in temperature with depth is called a thermocline. Salinity of seawater is affected by evaporation, precipitation, ice formation, and ice melting. ... Precipitation and river input decrease salinity because the input of freshwater dilutes the salts in seawater, thus decreasing their concentration.

Explanation:

from google

primary succession occurs in essentially lifeless areas regions in which the soil is incapable of sustaining life as a result of such factors as lava flows, newly formed sand dunes, or rocks left from a retreating glacier. secondary succession occurs

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.