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Related Flashcards
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Cards In This Set
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Why are studies on islands relevant to everyone? (Pg 139)
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Because the Earth is an island in essence
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Which human activities have transformed the biosphere.? (pg 140)
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Hunting/Gathering, agriculture, industry, urban developement
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What is subsistence hunting? (Pg 140)
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Hunters who make little demands on the environment and survive off of wild animal meat.
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What was the Green Revolution? (Pg 142)
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Starting in the 1950s governments use modern technology to farm vast ammounts of food.
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List 3 types of human activities that can affect the biosphere. For each activity give one environmental cos and one benefit ?(Pg 143)
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1. Machinery - More food / produce, releases harmful gasses.2. Pesticide - More food/produce, damages food chain3. Fertilizers - More food/Produce more dangerous chemicals too
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How might improved agricultural practices in a developing nation affect that nation's human population? (pg 143)
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It would get higher as the food rate grew, the carrying capacity would grow.
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What is the "tragedy of the commons"? (pg 144)
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Its when there is a common resource used by many and no one has a reason too look out for it so it gets destroyed/overused
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What is deforestation ?(pg 146)
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The loss of forests
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What is a pollutant? (Pg 148)
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A harmful material that can enter the biosphere through land air or water
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What is habitat fragmentation? (pg 151)
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Developed land destroys habitats and splits ecosystems.
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What is biological magnification? (pg 152)
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When food is so much with pestisides that it becomes an animal trait to have pestiside.
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What do conservation biologists mean by a "hot spot"? (pg 155)
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A place were a significant ammount of habitats are in danger
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What is ozone depletion? (pg 158)
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I decline in the volume of the earths stratosphere as a result of the increase of greenhouse gases.
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