Climatology is a subspecialty of
a. marine biology. b. oceanography. c. meteorology. d. environmental science.

Climatology is a subspecialty of meterology in which these are considered atmospheric sciences which study weather patterns and their effects on humans and the environment. In this case, the answer to this problem should be C. meterology. 

The truman doctrine was an american foreign policy whose stated purpose was to counter soviet geopolitical expansion during the cold war. it was announced to congress by president harry s. truman on march 12, 1947, and further developed on july 12, 1948, when he pledged to contain threats to greece and turkey

Interacting group of various species in a common location. for example, a forest of trees and undergrowth plants, inhabited by animals and rooted in soil containing bacteria and fungi, constitutes a biological community.