human impact

What are the three main material cycles

Carbon & oxygen cycle, water cycle, and the nitrogen cycle

What is the Carbon and oxygen cycle

Photosynthesis and respiration

What is the water cycle

Evaporation, condensation, and precipitation

What is the nitrogen cycle

Nitrogen fixing bacteria, plants, animals, and waste

What is biodiversity

A measurement of the degree to which species vary within an ecosystem

What are some ways that people have affected biodiversity

Cutting down trees, planting the same crop in the same area, removing vegetation, and killing organisms

What are renewable resources

Resources that can replenish themselves if not abused

What are nonrenewable resources

Resources that take a long time to replace of form

What is pollution

A harmful change in the chemical makeup of the air, water, or soil

What is direct harvesting

The destruction or loss of a species by over hunting

What is industrialization

The increase of pollution from air and water which uses more energy, water, and fossil fuels

What is thermal pollution

Heat pollution

What is air pollution caused by

The burning of fossil fuels

What is acid rain

When sulfur and nitrogen compounds in air pollution dissolve in the atmosphere to form acids

What is global warming

An increase in the earths temperature caused by an increase in greenhouse gases from a surplus of carbon dioxide in the atmosphere

What is ozone depletion

A hole in the ozone layer caused by the use of fluorocarbons