Which of the following best describes a difference between artificial and natural selection? Choose 1 answer : Natural selection
leads to greater fitness over timewhile artificial selection has no sometimes a damaging) effect on fitness B Natural selection leads to lower fitness over time, while artificial selection improves fitness the selected group . Only artificial selection leads to evolution Natural selection involves selective breeding while artificial selection does not.
The correct option is D. Enzymes are biological catalysts that speed up the rate of biochemical reactions in living cells. Most enzymes are made up of proteins. There are different types of enzymes and each perform specific functions under specified conditions.