5 Human Impacts on the Environment by Crash Course

5 Human Effects on the Environment

(As described in this video. Other effects include pollution.):

  1. Deforestation
  2. Desertification
  3. Climate Change
  4. Non-Native Species
  5. Over Harvesting

Why are ecosystems important?

They provide ecosystem services that:

  • Support Services - create a replenish the foundation of the earth's biological systems (carbon, water, nitrogen, and phosphorus cycles)
  • Provisioning Services - giving us the raw materials we need to live (for example, food, water, fiber, fuel)
  • Regulating Services - ecosystems moderate systems that can be dangerous if they don't function properly (for example, decomposers break down dead organisms, plants help filter water, regulate flood and erosion, and absorb carbon that regulates climate)
  • Cultural Services - ecosystems give us places to play, scenes to inspire us, and things to discover and learn about