Chapter 1 Test Review1

Chapter 1 Test Review1 - Dr Marcum Exploring Environmental...

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Dr. Marcum, Exploring Environmental Issues 1301 05 Chapter 1 test review **What did the agricultural and industrial revolutions do? New technologies have enabled us to grow increasingly more food per unit of  land.  We have converted nearly half the planet’s land surface for agriculture; our  extensive use of chemical fertilizers and pesticides poisons organisms and alters  natural system; and erosion, climate change, and poorly managed irrigation are  destroying 12.5-17.5 million acres or productive cropland each year. Pollution from our farms, industries, households, and individual actions dirties our  land, water, and air.  Outdoor air pollution, indoor air pollution, and water pollution  contribute to the deaths of millions of people each year.  Pressing pollution challenge  may be to address the looming specter of global climate change.  Human activity is  altering the composition of the atmosphere and that these changes are affecting Earth’s  climate.  Since the start of the industrial revolution, atmospheric carbon dioxide  concentrations have risen by 31%, to a level not present in at least 420,000 years.  Human actions and habitat alteration has driven many aquatic and terrestrial species  out of large parts of their ranges and towards the brink of extinction.  Earth’s biodiversity 
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This note was uploaded on 05/05/2008 for the course ENV 1301 taught by Professor Larrylehr during the Spring '07 term at Baylor.

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Chapter 1 Test Review1 - Dr Marcum Exploring Environmental...

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