Enzymes reduce the activation energy allowing chemical reactions to occur in living things.
Carbon dioxide is emitted as a by-product of clinker production an intermediate product in cement manufacture, in which calcium carbonate (CaCO3) is calcinated and converted to lime (CaO), the primary component of cement. CO2 is also emitted during cement production by fossil fuel combustion.
Answer:
The Mississippi river water source is fed by Lake Itasca in Northern Minnesota.
