Earth Science

Human Impacts on the Earth Environment

Water Pollution

Study Tip
Freshwater and ocean pollution affect the availability of safe water for humans and the environment. Water pollution kills millions of people in underdeveloped countries each year.

Municipal Pollution

Municipal pollution is water that comes from towns or cities, and contains pollutants from the following sources:

  • Sewage
  • Storm drains
  • Yard runoff
Study Tip
Freshwater and ocean pollution affect the availability of safe water for humans and the environment. Water pollution kills millions of people in underdeveloped countries each year.

Industrial Pollution

Industrial pollution comes from factories and hospitals. Forms of industrial pollution are:

  • Radioactive substances
  • Heavy metals, toxins, oils and solids
  • Chemicals
  • Heated water
Fertilizers and animal wastes
Fertilizers and animal wastes
runoff into streams

Agricultural Pollution

Agricultural pollution is runoff from crops and livestock. Fertilizers and animal waste runoff into rivers and streams. They are poisonous to the organisms that live in these environments.

Concept Check
  • What is municipal pollution?
  • List some examples of industrial pollution.
  • What forms of agricultural pollution exist?