Nitrogen is a very important element in biology. What are some of the reasons that organisms need nitrogen?

What are some things that limit population growth?

Match the types of competition to their descriptions

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.