According to jonah lehrer, what are the 4 types of cells that make navigation possible? describe each briefly: (need fast)

Approximately percent of the energy created by cell metabolism is used by the body to carry on its normal functions, such as respiration, digestion, reproduction, muscular movement, circulation, and cellular regrowth.

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.

Explain why it’s important for scientists to study the sun. list at least two challenges researchers face when examining earth’s nearest star.