Bio1100 Chapter 40 How Humans Influence the Living World
  1. Human activity can upset the balance of ecosystems, leading to the decline of many species.
     
  2. Extinction is a fact of life, but the current rate of the loss of species is accelerating, due largely to          activity to three main factors.

     
  3.             pollution can have devastating effects on animals high on the food chain due to biological                 .
     
  4. Atmospheric pollution includes                        (CFCs), which can deplete the          layer.
     
  5. The burning of fossil fuels releases           dioxide into the atmosphere, leading to global            due to the               effect.


     
    • Burning of coal releases           into the atmosphere, causing         precipitation.


     
  6. Alternative sources of energy include            power, solar and wind energy, and            fuels such as ethanol.


     
  7. The root of environmental problems is the rapid growth of the          population.

     
  8. Future population growth rates can be assessed by a population           .
     
  9. The impact of human activity on the environment can be estimated by the                footprint.