Water molecules made by living things become part of the water cycle through
A. aerobic respiration
B. the dark reactions
C. alcoholic fermentation
D. the Krebs cycle

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.