Approximately 75% of the Earth's surface is covered in water. Why is water considered such a precious resource?

Ecologist have observed a sharp increase of sulfur dioxide in the air . what might be a possible consequence of excessive sulfur dioxide in the air ? a. acid rain b. ozone layer depletion c. ozone layer hole d. increase in sea levels

Identify the examples in which sam interacts only with natural resources

The combining form leuk/o means red true or false