Answer:
True
Explanation:
Sewage contains many substances in it like suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease causing bacteria and other microbes. Hence it is said to be a complex mixture.
The correct answer is
<span>D. All the populations and the surrounding environment</span>
Jupiter, Saturn, Uranus, and Neptune.
<span>Mutations that increase fitness is type of mutations do scientists look for in a molecular clock. </span>
