The main source of heat energy inside the Earth is Convection Currents

Fire Inside the Inner Core

Tectonic Plate Movement

Radioactive Decay

What do lava flows made of aa indicate about the type of volcanic eruption that occurred? a. the eruption was viscous. b. the eruption was pyroclastic. c. the eruption was explosive. d. the eruption was quite. !

All organisms contribute some water to the water cycle by conducting

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes