Assuming that other factors are equal, how are the birthrate and death rate related in a stable population?
A. As birthrate rises, death rate falls.
B. Death rate is higher than birthrate.
C. Birthrate and death rate are equal.
D. Birthrate is higher than death rate.

Many farmers prefer cattle without horns because it is safer for their herds. the allele for no horns (n) is dominant to the allele for the presence of horns (n). a farmer mates a male with horns to a heterozygous female without horns. what is the chance that the offspring will have horns?

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis

Choose the diagram that best represents a habitat corridor explain your choice.