What leads to the development of a hypothesis

An hypothesis is a prediction or and educated guess. So the back ground knowledge that you already have on the topic should be used to predict the outcome on something. Here is a sentence starter: I believe this..because (give your reasoning and include a piece of evidence of why you believe that)  

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.

burning fossil fouls really decrease the carbon in the atmosphere so b