Wegener observed evidence of the similarity between the type and age of rocks at the edges of continents. which of the following best describes the reason for continents to have the same types and ages of rocks on their edges?

Plate tectonics suggests that Earth's entire crust is composed of a number of large plates that are in constant motion relative to each other. Some plates are sliding under other plates, some are sliding past each other, others are pulling apart, and still others are colliding.

i took the test it is D. The continents were part of an ancient, single landmass called Pangea that moved apart over millions of years.

so whats the answer

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.