What do you think should be done to preserve the natural resource you selected in part A if humans continue to produce energy with the resource you selected in part B? Is there a technological way to preserve it? Or would a government policy have the greatest effect? Explain your reasoning.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.

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.

it is called the mitotic spindle