UVB Radiation is a kind of ultraviolet light from the sun that has several harmful effects, UVB is particularly effective at damaging DNA, It is the cause of melanoma and other types of skin...
Carbon monoxide (CO) is a common, potentially lethal gas produced by the incomplete combustion of fossil fuels such as natural or liquefied petroleum gas, oil, wood, and coal, It is one of the oldest...
The hurricanes are a type of cyclone which consists of heavy rain and very strong winds , Although of the destruction which comes along with the hurricanes and tropical storms , there are benefits...
The crossing star theory (Chamberlain and Moulton 1905) The assumptions of the crossing star theory assumed that the solar system was originally the Sun, A huge star approached to the Sun, This star attracted...
The Solar Nebular Model Astronomers think that the most widely accepted model for explaining the evolution and formation of our solar system is ” the Solar Nebular Model ” which states that the planets...
The solar system the solar system consists of the Sun ( star ) , Eight planets ( revolving around the Sun in fixed orbits ) , the comets , the asteroids and the moons...
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