2.Name two methods of drawing out groundwater. 3.Name two activities which lead to the formation of s esewwaaggee. .

4.State any two precautions that can help avoid the choking of drains.

5.Fill in the blanks:

a. Waste water is called.

b. About of water is present in oceans and seas.

6.a. Discuss any two causes that lead to a decrease in ground water ..table.

b. Show distribution of water on the surface of the earth.

7.a. Suggest three ways of saving water at home.

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Aside from human impact, which of the following causes less water vapor production over a small area? (2 pderivartin

7. using your knowledge of colligative properties explain whether sodium chloride or calcium chloride would be a more effective substance to melt the ice on a slick sidewalk. use 3 – 4 sentences in your explanation. 8. when a 2.5 mol of sugar (c12h22o11) are added to a certain amount of water the boiling point is raised by 1 celsius degree. if 2.5 mol of aluminum nitrate is added to the same amount of water, by how much will the boiling point be changed? show all calculations leading to your answer or use 3 – 4 sentences to explain your answer. 9. if 5.40 kcal of heat is added to 1.00 kg of water at 100⁰c, how much steam at 100⁰c is produced? show all calculations leading to an answer. 10. the freezing of water at 0⁰c can be represented as follows: h2o (l) ↔ h2o(s) the density of liquid water is 1.00 g/cm3. the density of ice is 0.92 g/cm3. in 3 – 4 sentences explain why applying pressure causes ice to melt.

What term is applied to a scientist who studies ancient life, including animal and plant fossils a. anthropologist b. dendroclimatologist c. geophysicist d. paleontologist