What do theories hypothesize about the conditions of Earth's early atmosphere? Little to no oxygen Low levels of ultraviolet radiation Protective atmosphere Very cold temperatures
Natural selection is a process that causes heritable/favorable traits that are helpful for survival and reproduction to become more common as time goes on, and it gets passed from generation to generation.
Answer:D) The starch adapted flies and maltose adapted flies are not different species but a reproductive barrier is forming between the two populations
Explanation: differences have accumulated within the populations to isolate them reproductively. The flies have chosen to mate with those like them.
