Certified Residential Appraiser. 1  Applicants must have at least a bachelor (4-year) degree or 21 accredited college semester hours in prescribed courses. 2  Applicants must be Trainee Appraisers that have completed at least 2500 hours of experience over not less than 24 calendar months. 200 hours of prescribed pre-certification appraisal education is required. Submit a completed application, form RE -2060, electronic fingerprints and appropriate fee (see c. above).
Water distribution on Earth - Distribution of saline and fresh water. 1  The total volume of water on Earth is estimated at 1.386 billion kmÂ³ (333 million cubic miles), with 97.5% being salt water and 2.5% being fresh water. 2  The total volume of water in rivers is estimated at 2,120 kmÂ³ (510 cubic miles), or 2% of the surface fresh water on Earth.
But how much of Earth is water â i.e. how much water contributes to the actual mass of the planet? This includes not just the surface of the Earth, but inside as well. In terms of volume, all of the water on Earth works out to about 1.386 billion cubic kilometers (kmÂ³) or 332.5 million cubic miles (miÂ³) of space. But in terms of mas, scientists calculate that the oceans on Earth weight about 1.35 x 10 18 metric tonnes (1.488 x 10 18 US tons), which is the equivalent of 1.35 billion trillion kg, or 2976 trillion trillion pounds.