Outgoing tides can pull organisms out of the intertidal zone and into the open ocean. how does this limit the number of organisms that can live in the intertidal zone?
a) competition remains at a steady level
b) returning to the habitat is difficult
c) salinity increases
d) water quality changes

Pepsin is an enzyme in the stomach that breaks polypeptides into amino acids. pepsin functions best at a ph of around 1.5. what would be the most likely result if the ph of the stomach were increased to 5

Which best describes the scientific method? a. a path of clearly defined steps that must be followed in a particular order b. a possible answer to a scientific question based on knowledge or research c. the recipe for how to conduct an experiment that must be followed precisely d. the process of hypothesis and testing through which scientific inquiry occurs

During the process of blank and molecules such as a glucose must use a protein channel to cross through a cell membrane