Cual es la razon de que la molecula de oxigeno de calcio sea CaO y no Ca2O. cuantos electrones de valencia tiene el oxígeno y cuantos el calcio?

What is one benefit of a nonrenewable resource, such as natural gas? a. generate large amounts of electricity b. less expensive overtime c. produces pollution d. will run out eventually

Epinephrine is a hormone released from the adrenal gland of the body, most often in a stressful situation. it is known as the "fight-or-flight" hormone. one way that it causes a response in the body is to activate receptors on muscle cells. where are these cellular receptors located? a. on the cell membrane b. in the nucleus c. on the cell wall d. around the mitochondria

What controls activities within a eukaryotic cell?