The Origin Of Water On Earth Essay
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Explanation:
The origin of water on Earth remains a hotly debated topic among the scientific community. The most widely accepted theory is that millions of years after the Earth was formed, the planet was bombarded by numerous comets and asteroids (Earth Investigated, 2008) and water, in the form of ice was released into the atmosphere and on the landmass. Over time this water has accumulated to the amount that it is at today, covering approximately 70% of the planet in the forms of oceans, rivers lakes, ponds, polar ice caps etc.(Earth Investigated, 2008). Although water had arrived on the planet under such catastrophic circumstances, it has become the basis of survival for almost all living organisms (Earth Investigated, 2008.). Even though 70% of the planet is covered by water, less than 1% of it is available for use as fresh water (Biology Practical