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Some Human Activities which Modify Habitats
Human influences on the
environment can be considered here as being influences on the
habitats of living organisms. Any time humans alter the
hydrosphere, lithosphere, atmosphere or biosphere, habitats
are modified and survival can become more challenging (or even
impossible) for the organisms which live there.
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An open caste mine is a big hole in the ground
dug to extract metals and minerals. This one is in Arizona, USA, is to mine copper.
What organisms live in the deserts of Arizona?
How would building such a mine affect them? |
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When hunters miss their target, the lead shot which
comes out of the gun is left behind in nature.
Lead is a toxic metal. It is estimated that 3000
tons of lead shot are deposited in French
wetlands each year. Swans, ducks and geese pick
up the lead shot and store them in their
gizzards.
What influence could this have on these birds?
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The main component of a panda's diet is bamboo.
Bamboo forests have been cut down by humans for centuries.
What effect has this
had on the panda population?
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How
would building a dam on a river change the
habitat of the region? |
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The Open Door Web Site