Forest,grasslands,deserts,tundra, and freshwater marine
The answer is the second one because mercury doesn't have an atmosphere
If it causes danger to an individual, if you're going to sacrifice someone, or if it causes a conflict with other established laws.
Explanation:
Natural materials are those that are found in nature and have not been made by humans. By comparison, synthetic materials are man-made and cannot be found in nature. Synthetic products are usually created in laboratories by mixing different chemicals, or prepared compounds and substances made in a laboratory.
