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Fossil fuels like petroleum, coal and natural gas contribute to 86% of the primary energy production in the world. What is an environmental consequence of the extensive use of fossil fuels?

• increase in oxygen content of water in the oceans

• decrease in the use of renewable sources of energy

• increase in greenhouse gas emissions

• decrease in the average water temperature

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Why are fossil fuels considered nonrenewable?

• They are replenished by processes that take millions of years.

• They are formed from living things.

• They are only found in limited quantities.

• They cannot be replenished.

An environmental group published research that analyzed an increase in greenhouse gases in a region. It was found that this was a consequence of the extensive use of a particular energy source. Which type of energy source was most likely cited in the research?

• coal

• nuclear

• solar

• wind

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As the human population continues to increase exponentially, what is one important way that humans can help to minimize their impact on global warming?

• Use mass transit, such as buses and trains and carpool more often.

• Consume produce from large farms and agribusinesses instead of food grown locally.

• Operate appliances during peak hours of the day instead of in the evening and night.

• Build houses in the suburbs instead of homes in major cities and urban centers.

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What is a limitation for using solar energy to meet global energy needs?

• Energy from the Sun cannot meet Earth's energy needs because at any given time half of the Earth is in darkness.

• Energy from the Sun cannot meet Earth's energy needs because the Sun simply does not produce enough power.

• Energy from the Sun far exceeds global energy needs, but methods for efficiently capturing and storing it have not been found.

• Energy from the Sun far exceeds global energy needs, but most of that energy cannot reach the Earth due to interstellar dust and clouds.

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Which energy source contributes to the greatest emissions of gases in the environment during the energy production process?

• bio fuels

• fossil fuels

• nuclear energy

• solar energy

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Which energy sources will have minimal impact on the environment with respect to renewal and reuse?

• coal

• natural gas

• oil

• water

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As part of an investigation, a group of concerned citizens collected data about the global consumption of energy by fuel type in the last 20 years. The table shows the group's data. The citizens concluded that fossil fuel consumptions has reduced across the world. Based on the graph, is the conclusion correct and why?

• Yes. Consumption of renewables has increased globally over the time period.

• No. consumption of renewables has increased globally over the time period.

• Yes. Consumption of coal, petroleum and natural gas has increased globally over the time period.

• No. Consumption of coal, petroleum and natural gas has increased globally over the time period.

What conclusions can be drawn about agricultural water use in Mississippi in 2005?

• Mississippi had a higher irrigation water withdrawal than any state bordering it.

• Mississippi had one of the lowest irrigation water withdrawals of any state east of the Mississippi River.

• Mississippi had one of the highest irrigation water withdrawals of any state east of the Mississippi River.

• Mississippi withdrew more fresh water for irrigation purposes in 2005 than it had in 2004.

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Farmers withdraw water to irrigate their crops, as indicated in this map. What volume of freshwater might Mississippi farmers have withdrawn for irrigation purposes in 2005?

• 750 million gallons

• 3,400 million gallons

• 11,300 million gallons

• 17,200 million gallons

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