QUESTION 14 Air masses usually near the equator becausemakes the air more Oa rise, greater solar radiation and surface heating, buoyant Ob. rise, less solar radiation and surface heating, dense OC. fall greater solar radiation and surface heating, buoyart O d. fall,less solar radiation and surface heating, dense QUESTION 15 The study of how organisms in an area are influenced by factors such as climate, soils, predators, competition and evolutionary history would best be termed: a. ecology O b physiological ecology .natural history d. synecology e ecosystem ecology

At the equator, the Sun's direct rays are concentrated over it causing the region of equator to heat up . On getting heated , the air mass expand and become less denser , then rises up . Therefore , greater the solar radiation and high surface temperature, the air becomes more buoyant .

Ecology is defined as how the organisms of an area are affected by the factors such as the temperature , predators , climate , soil, predators, competition and evolutionary history. Ecology deals with the relation of organisms with each other and the abiotic components of the environment.