In a food chain, energy flow begins with which feed all life.

Why do oceanic plates tend to subduction when colliding with a continental plate

What is a dendrite and what does it do?

Label the following as inner or outer planets; a) has 67 moons made mostly of hydrogen and helium b) has rings c)no moons, high volcanic activity d) known as the red planet, has 2 moons e) very thin atmosphere, moons or rings