Regardless of the diurnal or seasonal cycles, insolation is always: A. higher at the equator and lower at the poles. B. highest in June and lowest in December. C. highest during the night and lowest during the day. D. higher at the poles and lower at the equator.

the principles and empirical processes of discovery and demonstration considered characteristic of or necessary for scientific investigation, generally involving the observation of phenomena, the formulation of a hypothesis concerning the phenomena, experimentation to test the hypothesis, and development of a conclusion that confirms, rejects, or modifies the hypothesis.

more words for this could be abiotic and biotic

abiotic: living organisms within an ecosystem

biotic: non-living organisms within an ecosystem