30. Why do allele frequencies change from one generation to the next?
A) because of the Hardy-Weinberg equilibrium
B) because some are dominant to others
C) because genotype frequencies change
D) because of evolutionary forces

Melting glaciers is a serious threat to the environment what is the possible consequence of melting glaciers on polar bears?

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.

What is the process by which biological parents pass traits such as hair type or eye color to their children