Presentation on theme: "HUMAN ENVIRONMENT INTERACTION. People & the Environment People depend on the environment for survival Throughout history humans have altered the environment."— Presentation transcript:
People & the Environment People depend on the environment for survival Throughout history humans have altered the environment Clearing of forests Irrigation Ditches Terrace Farming Dams
Clearing Land Forests are cut down in order to make room for agriculture Negatives? Positives?
Irrigation Ditches People reroute rivers to provide irrigation for agriculture. Negatives? Positives?
Terrace Farming Farming used to level out steep slopes and allow crops to grow. Negatives? Positives?
Dams A dam is a barrier that impounds water or underground streams. The reservoirs created by dams not only suppress floods but provide water for various needs to include irrigation, human consumption, industrial use, aquaculture and navigability.
Questions What other ways have humans changed the physical geography of the earth? What are some unforeseen consequences of altering the earth that we may have experienced?