What use one reason the air in cities is often polluted

What abo controlling alleles could kim give her child

What element is able to combine with itself and hydrogen to form large molecules ?

What happens as electrons move along the chain of molecules known as the electron transport chain? they gain energy, which causes atp molecules to lose phosphate groups. they gain energy, which causes h *ions to join with oxygen to produce water. they lose energy, which is then used by the cell to make atp. they lose energy, which is then used to break down atp.