Which is the most accurate description of an ecosystem? a. an ecosystem consists of a biological community-the physical and chemical factors-that make up its abiotic environment. b. an ecosystem consists of the biological community that occurs in some locale. c. an ecosystem consists of the biological community that occurs in some locale and the chemical factors that make up its biotic or abiotic enviorment .

Option A. An ecosystem consists of a biological community-the physical and chemical factors-that make up its abiotic environment

Explanation:

Ecosystem is sum total of biotic and abiotic factors of a geographical area. It also takes account of interaction between them. Here, all the living beings together make the biotic component of ecosystem while the physical and chemical factors makes its abiotic component. The abiotic components include temperature, soil type, rainfall pattern, light intensity etc.

not necessarily. higher fitness requires the organism to be reproductive successful. for example, an organism at age 10 with 15 offspring is much more fit than an organism at age 15 with only 5 offspring.