Question

question 2 of 10
collectively living organisms, air, water, and soil constitute the:
a. nonpolluted environment.
b. natural environment.
c. population level.
d. stratosphere

Explanation:

The natural environment encompasses all living (biotic) and non - living (abiotic) components like air, water, soil, and organisms. A non - polluted environment implies absence of pollutants (not the general category). Population level refers to groups of a single species. The stratosphere is a layer of the atmosphere. So, living organisms, air, water, and soil collectively form the natural environment.

Answer:

B. natural environment.