How do the Earth's physical factors influence population density? When population growth increases in an area, what is happening to the birth rate and age structure of thalpopulation?

It depends on the surface of the levels. the rougher the surface, the greater is the frictional force. for rougher surfaces, you would need to exert greater force to move the object. the concept is that, you must overcome the frictional force in order to bring the object into motion. this is the reason why we add lubricants to the joints so they could easily move. this answer was on

What's the question?

The principle of independent assortment describee how different genes independently separate from one another when reproductive cells develop.