The Sound Following the flash of lighting is because of Thunder.
Lightning is seen earlier than thunder because light travels much faster than sound.
The roar of thunder is the result of a shock wave produced when lightning super-heats the air through which it passes, causing that air to expand very rapidly. This rapid expansion of air creates a shock wave that travels outward at close to the speed of sound.
The main cause of Tsunami is Earthquake on Sea Surface.
From the cornea, the light passes through the pupil. From there, it then hits the lens, the transparent structure inside the eye that focuses light rays onto the retina. The iris, or the colored part of your eye, regulates the amount of light passing through.
All the organisms on your campus make up a community.
Trees that lose all of their leaves for part of the year are known as deciduous trees. Those that don't are called evergreen trees.
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