The number of trout in a lake drops when the lake is polluted. the trout population later increases, but the allele frequencies are different. what does this situation represent? a. genetic drift b. artificial selection c. speciation d. biodiversity

answer; the correct answer is (beta)

bc blah

explanation:

bc blah

"d.) carbon dioxide and hydrogen sulfide"

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.