In the carbon cycle, the role of fossil-fuel formation is to:

a. store excess carbon underground.

b. build up the amount of carbon dioxide in the air.

c. preserve organisms that are extinct.

d. keep populations of plants under control.

What are the components of each nucleotide?

Ap bio what are the major limiting nutrients in aquatic ecosystems

True or False?!! Pressure amd temperature increases as you move deeper below earth's surface.

In your own words, describe the theory of plate tectonics and the action that occurs at plate boundaries.

The appearance of fireflies at dusk is an example of a circadian rhythm because it a. is related to the phase of the moon b. is related to the temperature of the air c. happens daily d. happens seasonally

Under what circumstances does membrane transport always require energy?

What is one disadvantage of using plasma gasification to detoxify hazardous waste?

Euglena use which structure for movement? A. cilia B. flagella C. pseudopods D. they do not move

1. What is a reproductive process in which a cell's genetic information is duplicated and then divided to produce a single identical daughter cell from an outgrowth of a larger parent cell? A. production of spores B. budding C. binary fission D.

True or false? biologists studied the effects of forest fragmentation by calculating the difference between the amount of plant biomass in the edges of forest fragments and the interiors of unfragmented forest.