Briefly explain the difference between orogenic and epeirogenic crustal changes.

An easy way to calculate the amount of energy available at each level is to what?

Loss of protected health information collected for research should be directly reported to:

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules