Enzymes catalyze reactions by lowering the activation energy of the reaction. Enzymes are made of proteins, and therefore the answer here is B. Protein molecules.
<span>Stabilizing selection operates when individuals within a population of average body size have more offspring than those of large or small body size. this is the worlds way of stabilizing the population to a safe average.</span>
Answer:
A
Explanation:
Before exchange, it is expected that the capillaries (that have deoxygenated blood) will have more carbon dioxide while the lungs will have more oxygen. This allows for oxygen to diffuse into the capillaries while carbon dioxide diffused into the lungs during the exchange.
