Is tree trunks carbon sources

Advances in technology have enabled scientists and researchers to better study the evolutionary relationships between species

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.

The cretaceous period spanned the time interval between and 65 million years ago. 250 million 144 million 75 million 200 million