The release of products of combustion into the air often causes the formation of ozone near the surface of Earth. This ground-level ozone damages plants and affects their ability to absorb carbon dioxide. What most likely caused the doubling of ground-level ozone since 1850?

The release of primary air pollutants, such as carbon monoxide, VOCs, and particulate matter can lead to

The Clean Air Act reduces ___________ of pollutants that harm human health and lead to environmental problems.

The oceans affect climate by transporting heat and absorbing _________________.

During a/an _________________ event, surface water becomes warmer than usual in the Pacific Ocean, which causes rainstorms and flooding in typically dry areas of land.

Ice sheets in Antarctica are melting and breaking off into the ocean at a rate that is alarming to scientists.

Deforestation does not have an effect on climate, because plants and trees cycle CO2 out of the atmosphere.

The 3 main factors that influence Earth’s climate are: the sun, global wind patterns, and _____________.

A natural process in which certain gases in the atmosphere keep heat near the surface of the Earth and prevent it from radiating into space.

Which of the following are greenhouse gases?

This is an example of a proxy indicator, which is a type of indirect evidence that scientists use to study what the atmosphere was like in the past.

An increase in Earth’s average surface temperature refers to:

A substance, such as water vapor, methane, or carbon dioxide that absorbs heat and releases it slowly is known as a greenhouse gas.

The IPCC reports have concluded that global warming is occurring, but it is due to natural events and not human activities.

This agreement was signed in 1997 and and it commits signatories to reduce greenhouse gas emissions due to global warming. commits signatories to reduce greenhouse gas emissions due to global warming.

Which of the following is evidence of climate change as reported by scientists?

Ice cores contain bubbles of gas from the time each layer formed, allowing scientists to determine the concentration of Earth's atmosphere from many years ago.

According to this graph, what can scientists determine about the relationship between atmospheric CO₂ and temperature?

When seawater becomes warmer, it expands– decreasing the volume and making sea levels fall.