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If you see lightning and then hear the associated thunder 15 seconds later, the lightning flash was about ________ mile(s) away.

When a hurricane moves onto land, it rapidly loses its punch; that is, the storm declines in intensity. Which of the factors listed below contribute to this loss of punch?

The word “weather” is defined as __________.

Many reactions that produce secondary pollutants are triggered by ________ and are called photochemical reactions.

The main source of energy for a hurricane is the _______________.

A “London-type” smog is characterized by ______________.

In order to see a rainbow, an observer must ________ the rain and ________ the Sun.

This is the most abundant primary pollutant.

Inversions represent a hazardous meteorological condition with respect to air pollution because they always bring __________.

Plate tectonics “explains” certain climatic changes by showing that these changes may be related to ___________________.