Apopulation of oak trees is separated by a large canyon. which of the following is most likely to occur? the two populations will show cospeciation. the genetic variation between the two populations will increase. natural selection will cause one population to die, and the other to live. both populations will stop evolving.

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car