The shells of a certain species of marine snail are highly variable, with some snail shells being solid colors and others being striped. which condition of natural selection is this most related to? a. artificial variation b. environmental variation c. genetic variation d. no variation

Which phrase best describes surface currents? 1. up-and-down ocean movement caused by wind 2. waves that hit the shore at an angle and transport sand 3. streams of warm water flowing through the ocean and caused by wind 4. waves that approach the shore and cause their crests to fall into their troughs

Which term describes the number of waves that pass a given point in a given time? crest frequency trough wavelength

What is the role of the phospholipid belayer in cellular transport in living cells