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The question is , even though we have increased the carrying capacity of the planet , have we now exceeded it -LRB- Figure There is not yet an answer to that question , but there are many different opinions .
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The question is , even though we have increased the carrying capacity of the planet , have we now exceeded it -LRB- Figure There is not yet an answer to that question , but there are many different opinions .
TQA:T_0913_3
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exceeded
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The question is , even though we have increased the carrying capacity of the planet , have we now exceeded it -LRB- Figure There is not yet an answer to that question , but there are many different opinions .
TQA:T_0913_3
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exceeded
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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[ "eighteenth century", "In the eighteenth century" ]
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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[ "until we had exhausted our resources" ]
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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continue
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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continue
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continue
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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grow
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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exhausted
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In the eighteenth century , Thomas Malthus predicted that human population would continue to grow until we had exhausted our resources .
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exhausted
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exhaust
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At that point , humans would become victims of famine , disease , or war .
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At that point , humans would become victims of famine , disease , or war .
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At that point , humans would become victims of famine , disease , or war .
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become
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This has not happened , at least not yet .
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Some scientists think that the carrying capacity of the planet is about 1 billion people , not the 7 billion people we have today .
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Some scientists think that the carrying capacity of the planet is about 1 billion people , not the 7 billion people we have today .
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Some scientists think that the carrying capacity of the planet is about 1 billion people , not the 7 billion people we have today .
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think
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Some scientists think that the carrying capacity of the planet is about 1 billion people , not the 7 billion people we have today .
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carrying
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Some scientists think that the carrying capacity of the planet is about 1 billion people , not the 7 billion people we have today .
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carrying
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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The limiting factors have changed as our intelligence has allowed us to expand our population .
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expand
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Can we continue to do this indefinitely into the future ?
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Can we continue to do this indefinitely into the future ?
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Can we continue to do this indefinitely into the future ?
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Pollutants include materials that are naturally occurring but are added to the atmosphere so that they are there in larger quantities than normal .
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Pollutants include materials that are naturally occurring but are added to the atmosphere so that they are there in larger quantities than normal .
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Pollutants include materials that are naturally occurring but are added to the atmosphere so that they are there in larger quantities than normal .
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Pollutants include materials that are naturally occurring but are added to the atmosphere so that they are there in larger quantities than normal .
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Pollutants include materials that are naturally occurring but are added to the atmosphere so that they are there in larger quantities than normal .
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Pollutants may also be human-made compounds that have never before been found in the atmosphere .
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Pollutants may also be human-made compounds that have never before been found in the atmosphere .
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found
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution .
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began
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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Air pollution started to be a problem when early people burned wood for heat and cooking fires in enclosed spaces such as caves and small tents or houses .
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution -LRB- Figure 1.1 -RRB- .
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution -LRB- Figure 1.1 -RRB- .
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution -LRB- Figure 1.1 -RRB- .
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But the problems became more widespread as fossil fuels such as coal began to be burned during the Industrial Revolution -LRB- Figure 1.1 -RRB- .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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The 2012 Olympic Games in London opening ceremony contained a reen - actment of the Industrial Revolution - complete with pollution streaming from smokestacks .
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Photochemical smog , a different type of air pollution , first became a problem in Southern California after World War II .
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Photochemical smog , a different type of air pollution , first became a problem in Southern California after World War II .
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became
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Photochemical smog , a different type of air pollution , first became a problem in Southern California after World War II .
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became
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Photochemical smog , a different type of air pollution , first became a problem in Southern California after World War II .
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become
[ "where", "did", "something", "become", "something", "_", "_", "?" ]
[ "Southern California", "in Southern California" ]
[ [ 15, 17 ], [ 14, 17 ] ]
The abundance of cars and sunshine provided the perfect setting for a chemical reaction between some of the molecules in auto exhaust or oil refinery emissions and sunshine -LRB- Figure 1.2 -RRB- .
TQA:T_0922_1
6
provided
true
provide
[ "what", "did", "something", "provide", "_", "_", "_", "?" ]
[ "the perfect setting for a chemical reaction between some of the molecules in auto exhaust or oil refinery emissions and sunshine", "perfect setting", "the perfect setting for a chemical reaction" ]
[ [ 7, 28 ], [ 8, 10 ], [ 7, 14 ] ]
The abundance of cars and sunshine provided the perfect setting for a chemical reaction between some of the molecules in auto exhaust or oil refinery emissions and sunshine -LRB- Figure 1.2 -RRB- .
TQA:T_0922_1
6
provided
true
provide
[ "what", "_", "_", "provided", "something", "_", "_", "?" ]
[ "abundance of cars and sunshine", "The abundance of cars and sunshine" ]
[ [ 1, 6 ], [ 0, 6 ] ]
Photochemical smog consists of more than 100 compounds , most importantly ozone .
TQA:T_0922_2
2
consists
true
consist
[ "what", "_", "_", "consists", "_", "of", "doing something", "?" ]
[ "Photochemical", "Photochemical smog" ]
[ [ 0, 1 ], [ 0, 2 ] ]
Photochemical smog consists of more than 100 compounds , most importantly ozone .
TQA:T_0922_2
2
consists
true
consist
[ "what", "does", "something", "consist", "_", "of", "_", "?" ]
[ "more than 100 compounds", "compounds" ]
[ [ 4, 8 ], [ 7, 8 ] ]
Smog over Los Angeles as viewed from the Hollywood Hills .
TQA:T_0922_3
5
viewed
true
view
[ "what", "is", "_", "viewed", "_", "_", "_", "?" ]
[ "Smog" ]
[ [ 0, 1 ] ]
Smog over Los Angeles as viewed from the Hollywood Hills .
TQA:T_0922_3
5
viewed
true
view
[ "where", "is", "something", "viewed", "_", "from", "_", "?" ]
[ "the Hollywood Hills", "from the Hollywood Hills" ]
[ [ 7, 10 ], [ 6, 10 ] ]
Smog over Los Angeles as viewed from the Hollywood Hills .
TQA:T_0922_3
5
viewed
true
view
[ "where", "is", "something", "viewed", "_", "_", "_", "?" ]
[ "over Los Angeles" ]
[ [ 1, 4 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
13
died
true
die
[ "what", "did", "someone", "die", "_", "from", "_", "?" ]
[ "Terrible air pollution events" ]
[ [ 0, 4 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
13
died
true
die
[ "where", "did", "someone", "die", "_", "from", "something", "?" ]
[ "in Pennsylvania and London", "Pennsylvania and London" ]
[ [ 4, 8 ], [ 5, 8 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
13
died
true
die
[ "who", "has", "_", "died", "_", "_", "_", "?" ]
[ "many people" ]
[ [ 11, 13 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
25
led
true
lead
[ "what", "did", "something", "lead", "_", "to", "_", "?" ]
[ "to the passage of the Clean Air Act", "the passage of the Clean Air Act" ]
[ [ 26, 34 ], [ 27, 34 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
25
led
true
lead
[ "what", "_", "_", "led", "_", "to", "something", "?" ]
[ "the recognition of the hazards of photochemical smog", "Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog", "Terrible air pollution events in Pennsylvania and London" ]
[ [ 16, 24 ], [ 0, 24 ], [ 0, 8 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
25
led
true
lead
[ "when", "did", "something", "lead", "_", "to", "something", "?" ]
[ "in 1970" ]
[ [ 34, 36 ] ]
Terrible air pollution events in Pennsylvania and London , in which many people died , plus the recognition of the hazards of photochemical smog , led to the passage of the Clean Air Act in 1970 in the United States .
TQA:T_0923_0
25
led
true
lead
[ "where", "did", "something", "lead", "_", "to", "something", "?" ]
[ "in the United States" ]
[ [ 36, 40 ] ]
The act now regulates 189 pollutants .
TQA:T_0923_1
3
regulates
true
regulate
[ "how much", "is", "something", "regulating", "_", "_", "_", "?" ]
[ "189" ]
[ [ 4, 5 ] ]
The act now regulates 189 pollutants .
TQA:T_0923_1
3
regulates
true
regulate
[ "what", "is", "_", "regulated", "_", "_", "_", "?" ]
[ "pollutants" ]
[ [ 5, 6 ] ]
The act now regulates 189 pollutants .
TQA:T_0923_1
3
regulates
true
regulate
[ "what", "_", "_", "regulates", "something", "_", "_", "?" ]
[ "The act" ]
[ [ 0, 2 ] ]
The act now regulates 189 pollutants .
TQA:T_0923_1
3
regulates
true
regulate
[ "when", "does", "something", "regulate", "something", "_", "_", "?" ]
[ "now" ]
[ [ 2, 3 ] ]
The six most important pollutants regulated by the Act are ozone , particulate matter , sulfur dioxide , nitrogen dioxide , carbon monoxide , and the heavy metal lead .
TQA:T_0923_2
5
regulated
true
regulate
[ "what", "is", "_", "regulated", "_", "_", "_", "?" ]
[ "pollutants", "The six most important pollutants" ]
[ [ 4, 5 ], [ 0, 5 ] ]
The six most important pollutants regulated by the Act are ozone , particulate matter , sulfur dioxide , nitrogen dioxide , carbon monoxide , and the heavy metal lead .
TQA:T_0923_2
5
regulated
true
regulate
[ "what", "is", "_", "regulating", "something", "_", "_", "?" ]
[ "by the Act are ozone , particulate matter , sulfur dioxide , nitrogen dioxide , carbon monoxide , and the heavy metal lead", "the Act" ]
[ [ 6, 29 ], [ 7, 9 ] ]