Remember that Convection is a type of heat transfer. Convection also occurs in the mantle. Describe where the heat is coming from and how this heat affects the movement of Earth’s mantle and Earth’s crust.

The concept of keystone species is controversial among ecologists because most organisms are highly interdependent. if each of the trophic levels is dependant on all others how can we say one is most important

What is used to keep track of the gamates and possible offsprings combination

1. fold your hands together so your thumbs cross over ,and look at your thumbs. which thumb feels most "comfortable" on top is actually controlled by a gene. the left thumb folding over the right thumb is a domi