How respiration and photosynthesis are important to one another?

without photosynthesis, there would not be any glucose or oxygen and those are what start off the respiration reaction. without respiration plants would use up all CO2 and starve to death. photosynthesis requires the products from respiration and vise-versa.

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.