Molecules may be assembled into a microscopic structure called a(n) which carries out specific functions within a cell.

Consider the model of the oxygen cycle on earth. the majority of earth's oxygen reservoirs are found in the a) atmosphere. b) biosphere. c) hydrosphere. d) lithosphere.

When a doggo starts to pace around in the same line for a hand full of days. what would that mean?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area