It means an organism respire without it
so that organism know as anaerobic
for example : bacteria eats human and animal dead bodies under the earth there O² is deficient so bacteria respire with oxygen O²
I mean I honestly do not know
The answer is diversification. The populace segment of an animal varieties' specialty relates to the conveyance of people crosswise over situations inside an area. As developmental clades of species expand, they apparently fill specialty space, and, thus, the rate of increment in species numbers moderates.
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:
Quartzite is formed from the metamorphism of sand stone
