Please select the word from the list that best fits the definition _________ occurs when the Earth, Sun and Moon form a straight line.
The oceans were formed when the earth cooled and water vapor condensed to create rain.
The 3 stages of the water cycle area.evaporation c.condensation b.precipitation d.all of the above
Which of the following statements about the effects of pollution on marine ecosystems is true? a. Burning fossil fuels causes a direct increase in the temperatures of ocean water. b. Burning fossil fuels causes a decrease in the pH of ocean water making it more acidic. c. Pollution in marine ecosystems causes a decrease in the formation of algal blooms. d. Addition of warm water has no effect on marine ecosystems. Please select the best answer from the choices provided
Groundwater overdraft occurs when _______.a.the location of the water table changes due to seasonb.aquifers become pollutedc.the rate of use exceeds the rate of replenishmentd.trees are planted
Aquifers are _______.a.located below the water tableb.important sources of freshwaterc.located in the saturated zoned.all of the above
Which of the following is NOT an effect of El Niño?a.mudslidesc.earthquakesb.droughtsd.hurricanes
The defining characteristic of potable water is that it _______.a.is used as tap waterb.can be used for washing and irrigationc.can be used and consumed without riskd.is delivered through pipes
Which of the following is least likely to have difficulties with economic access to potable water?a.Zimbabweb.Australiac.Indiad.None of the above
Which of the following is not an effect of erosion on lakes?a.water leakageb.wearing away of sidesc.increased water levelsd.basin filling with sediment
Australian aborigines could not use wells in the desert due to lack of groundwater.
The use of buffer strips can help reduce human impacts on waterways.
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