This is most likely the result of OXIDATION. When an apple is cut open, the cells of the apple are exposed to the atmosphere, the in built defense mechanism inside the apple that is supervised by certain enzymes react to this situation by reacting with oxygen and creating an oxidized brown layer which protects the apple from foreign bodies.
A contour interval is the lines on a topographic map that state the height (from sea level) of the hill, valley, mountain or the ground level.
At the end of the esophagus is a thick ring of a muscle called a sphincter which allows food to enter the stomach but not from the stomach back into the esophagus. Once the food enters the stomach it is mixed with the digestive juices.
Im no science teacher but I think it is the globular proteins
Answer:
C) male-male competition; sexual conflict and antagonistic coevolution
Explanation:
Male-male competition happens when two males of a species fight for the opportunity to mate with a specific female.
