Which of the following is NOT a cause or effect of the rock cycle? * weathering, erosion, and deposition
hurricanes, tornadoes, and thunderstorms
mountain building, volcanoes, and rift zones
plate tectonics, continental drift, and earthquakes

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

you should wear a lead protective shield when having teeth x-rays

hope i

-lavira : )