People pave over a large field to build a parking lot. describe two ways this action will likely affect the water cycle in the local environment.

I can't think of a lot of ways, but when  paving it involves a lot of chemicals. A filed usually involves grass or sand. Something leading to the ground. Chemicals are able to soak into the ground water comes from the ground. Water also travels through the grounds into local rives, oceans, lakes etc so the chemicals being used can spread through out those environments, hurting animals, and maybe even people when swimming or drinking it.  

Mantle convection is the process that drives plate tectonics. the theory of plate tectonics states that the crust is divided into plates that float on the semi molten mantle below. the circular motion of the magma as it slowly rises and falls or move though convection cells drags the plates along causing them to move. the heat source in the lamp would represent the earth's core. the core is the source of energy that drives convection in the mantle. the lava represents molten magma under the earth's surface. if the lava lamp had floating pieces they would move as the circular motion of the lava in the lamp as it rises and falls would move them along the surface. these floating pieces would represent pieces of the earth's crust.