The Sky's Thunderous Giants

When water vapor is added to air the mixture of gases becomes lighter and exerts lless pressure than dry air
Thunderstorm are by a cumulonimbus cloud
____________ is the major effect of weather disturbance characterized by overflowing water that covers the ground.
Which period is known as the Renaissance?
Which of these is a type of communication system?
Which word is similar to hinterland?
Which word is similar to impulsive?