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Ozone is a major component in a noxious mixture of gases and particles called ________.

Ozone is a major component in a noxious mixture of gases and particles called ________.

The trace gas(es) that is(are) most important are ________.

The trace gas(es) that is(are) most important are ________.

For a radiometric date to be useful, which of the following is true?

Feedback mechanisms that produce results that are just the opposite of the initial change are called ________.

The best-known features on the surface of the Sun are dark blemishes called ________.

Who made the first clear statement of the law of superposition? When?

What percent of the solar energy reaching the top of the atmosphere passes through the atmosphere and is absorbed at Earth’s surface?

Types of climate-feedback mechanisms consist of ________.