2. Why do you think soils are thicker in a valley?

How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.

What came first egg or chicken? and is tomato a vegetable or a fruit?

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates