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☆☆☆☆☆Macromolecules are large molecules. Macromolecules are found in the proteins, carbohydrates, nucleic acid, and lipids in the body. Macromolecules are essential to the structure and function of a cell.
A theory is the result of many, many tests and observations.
Biomass can be regrown quickly, making it a good alternative to coal.
geothermal
sulfur dioxide
production of waste like greenhouse gases
Well its definitely the area. This includes diseases, food, technology, and other races. These can all effect the outcome of a civilization(population).
It must have lived for a short geologic period of time.
Die off
A steel bottle
Gasoline is burned by a car engine
Carbon dioxide absorbed in water form a carbonic acid.
A citric acid is added to the solution but the pH of the solution does not change
