What factors control the flow of ground water? Can it flow upward, despite downward gravitational pull?
What will be an ideal response?
Potential energy and pressure energy drives ground-water flow. Gravity moves water downward, with potential energy driving the motion. Pressure exerted by the thickness of water also drives motion, either horizontally or vertically. Water flows through permeable and porous materials, from high energy to low energy. It flows in a curved path. Ground water can flow upward due to the pressure energy.
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Qualitative data may involve which of the following?
A. images B. sketches C. descriptive words D. labels E. All of these choices are correct.
When did the domestication of plants occur?
A) 15,000 years ago B) 12,000 years ago C) 8,000 years ago D) 6,000 years ago E) none of the above
The problem known as sediment pollution is a major environmental issue. Which of the following is a problem associated with sediment pollution?
A. any pollution that causes crops to become unfit to eat B. compaction reduces crop production C. buildup of heavy metals makes soils toxic and unusable D. too much fertilizer makes soils toxic and unusable E. excess sediment in stream channels increases flooding
?All arsenic pollution in groundwater is human-caused.
Answer the following statement true (T) or false (F)