Which of the following describes the relationship between population growth and the underground water supply?
a. as the population grows, the water supply remains the same, thus increasing its demand.
b. as the population grows, the water supply is increased due to modern technology.
c. as the population grows, the water supply grows proportionally because of the increased demand.
d. as the population grows, the water supply shrinks due to the increased demand.

Part a - which gene to compare? in this exercise, you will use the cytochrome c oxidase i (coi) gene to investigate relationships among salmon species. (this gene encodes a protein that functions in the mitochondrial electron transport chain.) you will compare the coi gene sequences from your salmon test samples to the standard sequences for each salmon species. in order for the coi gene to be useful for distinguishing among the different salmon species, which three statements must be true?