The density does NOT change. If you have an object and then ylu split it in half, the density does not change, it will be the same.
A. Certain factors are dominant, and others are recessive
Composed of a phospholipid bilayer with embedded proteins, the plasma membrane is selectively permeable to ions and organic molecules and regulates the movement of substances in and out of cells.
"an increase in predators" would likely lead to an increase in genetic variation in a population of squirrels, since the squirrels would have to adapt to the new threats.
