Glacier is a large mass of water that moves over land:

Ore is a mineral deposit large enough to be extracted from the ground:

Desalination removes salt and minerals from freshwater to make saltwater:

Overpopulation is when the number of humans grows beyond what resources can support:

Gases that react in the sunlight to produce a form of oxygen:

Removal of forest with a different purpose:

Small particles of rocks and sand from land in the water:

Advance of desert conditions where previously there were fertile areas:

Precipittation that is more acidic than normal because of air pollution:

Energy-rich substances made from remains of organisms:

Contamination of Earth's land, water, or air:

Pollutants released into the air:

Water and human wastes that are washed down sinks, showers, and toilets:

Anything we use that naturally occurs in the environment:

Resources that are not replaced within a short time frame:

Number of deaths per 1,000 individuals:

The number of births per 1,000 individuals for a period of time:

Growth pattern in which individuals reproduce at a constant rate:

Splitting of an atom's nucleus into 2 nuclei:

Liquid fossil fuel: