Natural selection is a mechanism of evolution. Organisms that are more adapted to their environment and are more likely to survive and pass on the genes that aided their success. This process causes species to change and diverge over time.
<span>1. c) Exposure would weaken the body’s immune system and leave it unable to fight future infections. </span>2. <span>c) Excess amounts are removed by the kidneys and excreted along with urine.</span>