Humans can affect diversity within a population. Which best explains why there are so many different breeds of dogs?

The hypothesis of continental drift states that earth's continents, which are located on tectonic plates, move relative to each other. which of the following is true of the movement of the tectonic plates? a. tectonic plates only move once every million years. b. they move at a rate of approximately 5 centimeters per year. c. tectonic plates never move, only the continents located on them do. d. their movements are very rapid and occur at random times.

How do all types of diffusion/passive transport actually ‘work’ without using even the smallest amount of cellular energy?

Some substances but not other can cross the (blank) membrane of a cell