The cycles within which earth's matter moves are closed systems. This means nothing is gained or lost from the system; it only changes from one form to the other. The total amount of matter on earth remains the same. Using tectonic plates as an example, divergent boundaries occur where new oceanic crust is being created. New crust is being created and simultaneously the same amount of crust is being destroyed at convergent margins.
Because the toxins from gas are not good to breath in and eventually we will al die from it
14.6 million square miles is the area surface of the moon
the moon is 80 times less than earth
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National integrity is important because it helps a state to promote and uplift all race, sex, class and religion proportionally. Also it helps to fulfill the rights and judicial demand of people. Besides it also helps to make legal provisions for distribution of resources and means of a country equally .
National integration is the awareness of a common identity amongst the citizens of a country. It means that though we belong to different castes, religions and regions and speak different languages we recognize the fact that we are all one.