Sea gulls prey on snails on the rocky sea coast. The snails vary in color from solid brown to brown and tan striped. The birds suck the soft snail bodies out of the shells and leave the shells behind on the rocks. Scientists picked up 500 empty shells and found that 400 of the shells were solid brown and only 100 were striped. Over the years, what would you expect to happen to the snail population?

the electromagnetic spectrum includes, from longest wavelength to shortest: radio waves, microwaves, infrared, optical, ultraviolet, x-rays, and gamma-rays.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's

layer 3 is younger than layer 6.