Human Impact Question Preview (ID: 49857)
Students Will Determine How Humans Impact The Ecosystem.
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Erosion is the process by which soil and sediments are moved by gravity, wind, and water. Erosion occurs naturally, but it can be accelerated by human activity. Which of these human activities most contributes to soil erosion?
a) biking on forest trails
b) boating on a lake
c) cutting down trees
d) fertilizing a lawn
What effect has urbanization had on air pollution in the United States and around the world?
a) People driving fewer cars results in more air pollution.
b) Providing less mass transportation leads to less air pollution.
c) Locating more industries in urban areas creates more air pollution.
d) People driving more cars leads to less air pollution.
There are many sources of air pollution in the United States and around the world. Some are natural sources, and others come from humans. Which of these examples is a human source of air pollution?
a) dust storms
b) volcanic ash
c) industrial emissions
d) forest fires caused by lightning
Smog is a pollutant that can cause serious health problems. Smog is most often seen over large cities. Which of these substances is a main ingredient of smog?
a) volcanic ash
b) vehicle exhaust
c) carbon dioxide
d) acid precipation
Urbanization has led to an increase in air pollution around the world. Which of the following BEST explains why urban areas have more air pollution that rural areas do?
a) Houses are closer together and larger.
b) There are more cars and buses in urban areas.
c) There are fewer green areas and more paved areas in urban areas.
d) Drivers travel shorter distances between destinations in urban areas.
The process of humans cutting down trees is called
a) deforestation
b) urbanization
c) dessertification
d) socialization
Reforestation is the planting of trees that have been cut down by loggers and builders. One benefit of reforestation is restoring lost trees, which future generations can use for their wood. How else could reforestation benefit a community?
a) It limits the space available for building homes and businesses.
b) It decreases the chances of a forest fire spreading near people’s homes because of new tree growth.
c) It decreases the land available for growing crops and raising livestock.
d) It rebuilds forests, which provide shelter to animals, plants, and other resources.
When forest land is cleared for human use, the loss of trees can lead to other changes to Earth’s surface. Which of the following processes is most likely to occur after land has been cleared of its trees?
a) soil erosion
b) air pollution
c) changes in the flow of water
d) water pollution
Erosion is the process by which soil and sediments are moved by gravity, wind, and water. Erosion occurs naturally, but it can be accelerated by human activity. Which of these human activities most contributes to soil erosion?
a) biking on forest trails
b) boating on a lake
c) cutting down trees
d) fertilizing a lawn
Erosion is the process by which soil and sediments are moved by gravity, wind, and water. Erosion occurs naturally, but it can be accelerated by human activity. Which of these human activities most contributes to soil erosion?
a) biking on forest trails
b) boating on a lake
c) cutting down trees
d) fertilizing a lawn
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