Pls help : Cumulonimbus clouds are thunderstorm "factories." Inside them, water droplets combine to form larger drops. Soon the drops become too heavy to float on the air. They fall as rain or hail. Ancient cultures came up with their own explanations for the formation of lightning and thunder. The Vikings believed that lightning struck when Thor, the god of weather, threw down his great hammer. Thunder rumbled when his chariot collided with storm clouds. People sought to explain the storms' diameter forecast

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