Human Impact and Mitigation

Modern agricultural technologies include using chemicals on crops and livestock, specialized breeding of plants, monitoring soil quality, and modernization of farm equipment. Which effect of these advances in agricultural practices negatively impacts the environment?

• People are able to produce crops on smaller plots of land.

• Antibiotics given to animals may affect the balance of bacteria in humans.

• Some animals in these areas have died off because of the chemicals used.

• Plants grown previously are replaced by breeds better able to withstand disease.

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Which gas in Earth’s atmosphere acts like this greenhouse?

• argon

• oxygen

• nitrogen

• carbon dioxide

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How is plastic pollution harmful to the environment?

• plastic releases harmful chemicals when it breaks down

• items such as plastic bags can be mistaken as food by animals

• plastic breaks down into microplastics, which animals can eat

• all of the above

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Deforestation, which is the clear cutting of forests affects climate change due to

• deforestation depletes the ozone layer

• forest clearing leads to increased noise pollution

• forest burning releases additional carbon dioxide into the atmosphere

• deforestation increases the number of plants and animals in an area

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How does carbon dioxide affect global temperature?

• It causes it to decrease as it absorbs the suns energy

• It causes temperature to increase by trapping heat and reflecting it back to the Earth

• no effect

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What human activity would help reduce or decrease the amount of carbon dioxide in the atmosphere?

• increase human population

• increase the number of cars being driven

• decrease the burning of fossil fuels

• decrease the number of recycling programs

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Actions that reduce or prevent emissions from greenhouse gases

• adaptation

• mitigation

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burning fossil fuels -> increased carbon dioxide in the atmosphere -> _____

• decrease in global temperature

• increase in global temperature

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What does the image show?

• Ozone which is found in the stratosphere

• Gases trapping the sun's heat in Earth's atmosphere

• Wind, or the movement of air

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Based on the graph below, what is one observation you can make about how the amount of carbon dioxide has changed over the past 60 years?

• it has increased

• it has decreased

• it has stayed the same

• inconclusive

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