Which is the best definition of Directional Selection? A: A process by which two species can no longer reproduce

B: A process by which one of the extreme variations of a trait is favored

C: A process by which individuals with either extreme of a trait are favored

D: A process by which average individuals in a population are favored.

The graph shows the solubility of several different salts in water, across a range of temperatures. according to the graph, which salt can dissolve at a concentration of about 60 g/100 cm3 of water at 40 degrees celsius?

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

Which kind of worm has a closed circulatory system? a planarian b fluke c pinworm d an earthworm