Life Science Review 1

Toxic chemicals in mobile phone batteries can pollute the environment when the phones are thrown away in unlined landfills. Which of the following best explains why people continue to use mobile phones even though the phones can have a negative impact on the environment?

• Mobile phones are less expensive than phones with cords.

• Mobile phones cause people to become distracted.

• Mobile phones make communication more convenient.

• Mobile phones cause less environmental damage than other electronic products.

In the 1970s scientists began investigating the chemical reactions that caused the destruction of ozone in the upper atmosphere. Which statement best describes a direct result of their research on society and on the environment?

• Alternatives to ozone-depleting aerosols were invented.

• Research on a reusable space shuttle was initiated.

• Global positioning technology was invented.

• Plastic bags were invented as an alternative to paper bags.

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Measurements of carbon dioxide concentrations in the air taken over the past decade have shown a

• leveling off.

• slow increase.

• steady decline.

• dramatic increase.

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Nonrenewable energy sources, such as oil and natural gas, are formed from the remains of organisms buried beneath the surface of Earth. What is one advantage of using natural gas instead of solar power to generate electricity?

• Natural gas is free to extract and use.

• Natural gas plants can make power at night.

• Natural gas is safer than solar energy.

• Natural gas plants can convert gas to electricity.

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Many countries depend on the energy from fossil fuels. Some scientists suggest using renewable sources of energy instead. Why would scientists most likely suggest using renewable sources of energy?

• They are cheaper to develop.

• They are easier to transport.

• They are safer for the environment.

• They produce more energy.

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Over which of the following components of smog do humans have the least control?

• water vapor

• sulfur dioxide

• ammonia

• nitrogen oxides

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Scientists monitor ozone in the upper atmosphere and at ground level. Changing concentrations of each can cause health problems for people. Which set of changes would cause the most health concerns?

• an increase in both atmospheric and ground level ozone

• a decrease in both atmospheric and ground level ozone

• an increase in atmospheric ozone, and a decrease in ground level ozone

• a decrease in atmospheric ozone, and an increase in ground level ozone

Automobile engines built today are designed to be gas efficient. Gas-efficient engines most likely affect a city by reducing

• air pollution.

• heat pollution.

• noise pollution.

• light pollution.

Which action could be used to help improve respiratory health in humans?

• reducing the amount of oxygen on Earth

• monitoring atmospheric and air quality on Earth

• decreasing the amount of ozone in the atmosphere

• maintaining constant air pressure in the atmosphere

This chart shows the number of respiratory cases in a community as related to distance from several local factories.

Which statement best supports this data?

• The factories are cleaning the air, causing the people who live closest to the factories to be at the greatest risk for developing respiratory disease.

• The factories are cleaning the air, causing the people who live closest to the factories to be at the lowest risk for developing respiratory disease.

• The factories are a source of air pollution, causing the people who live closest to the factories to be at the greatest risk for developing respiratory disease.

• The factories are a source of air pollution, causing the people who live closest to the factories to be at the lowest risk for developing respiratory disease.

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