it makes you breathe
Oxygen causes oxidation reactions; carbon dioxide with water (as carbonic acid) dissolve minerals.
The chemical products are oxygen, ATP, and NADPH.
Of course not!
iron
aerobic
oxygen
Chemical reactions that release energy often occur spontaneously. Chemical reactions that absorb energy will not occur without energy.
enzymes carry out chemical reactions, and enzymes are in proteins, so preoteins carry out chemical reactions
that's exothermic reactions in general. :)
Ozone layer is being depleted. The chemical reactions involve depleting of ozone into oxygen.
it provides energy for some reactions to take place.
energy is released or absorbed.