Mixtures and Solutions Answers

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Which greenhouse gas has an average lifetime in the atmosphere of a few weeks to thousands of years and is the largest contributor to climate change?

carbon dioxide

methane

nitrous oxide

fluorinated gas

What effects do wind patterns have on climate?

They move warm water toward the east.

They change the amount of precipitation in a region.

They carry warm or cooled water very long distances.

They cool Pacific waters and increase hurricane activity in the western Atlantic.

Pollen grains help scientists

identify plants and make assumptions on past climate conditions.

understand tree growth and make assumptions on past climate conditions.

understand how Earth was shaped and make assumptions on past climate conditions.

identify major ice ages and make assumptions on past climate conditions.

Which factors of Earth’s position would contribute to long-term climate change?

its elliptical orbit and the tilt on its axis

its distance from other planets and the tilt on its axis

the tilt on its axis and its distance from the moon

its distance from the moon and its elliptical orbit

What is one way people positively affect water resources?

polluting from nonpoint sources

increasing farming and construction

disposing of chemicals in water

limiting use of acid and other pollutants

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