QUESTION 21 Ground water is currently depleted mainly by ________. transpiration

Question

QUESTION 21

Ground water is currently depleted mainly by ________.

transpiration

evaporation

runoff

extraction

infiltration

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QUESTION 22

The density of seawater _________________.

increases with longitude

decreases with salt concentration

increases with temperature

decreases with low air pressure

increases with salt concentration

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QUESTION 23

One-fifth of Earth's total freshwater supply is in ________.

groundwater

the ocean

estuaries

the tundra

ponds

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QUESTION 24

We build dams to do all of the following except ________.

generate electricity

provide drinking water

improve habitat for native fish

ease irrigation

prevent floods

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QUESTION 25

Which of the following does not contribute to acidic deposition?

coal-burning

NOx

vehicle engine combustion

sulfur dioxide

ozone

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QUESTION 26

What is the definition of feedback in global warming terms?

When the earth fills out a comment card saying it doesn't like what we are doing to it.

When the earth's general population gathers to rally awareness towards Global Warming.

When one quantity is changed causing a second quantity to change as well, then the second quantity creates a change in the first quantity.

None of the above

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QUESTION 27

The largest region of thinned stratospheric ozone has appeared over ________ since the 1960s.

the Arctic

Europe

the Antarctic

Southest Asia

North America

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QUESTION 28

Cellular respiration ________.

liberates carbon dioxide

results in a net consumption of energy

represents a decrease in entropy

involves a net consumption of water

requires the green pigment chlorophyll

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QUESTION 29

The rate at which biomass becomes available to consumers is termed ________.

ecosystem productivity

net primary productivity

net density

grossulosity factor

gross primary production

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QUESTION 30

The eutrophication that has taken place in the Gulf of Mexico and other locations appears to be due to ________.

weather alone, because it is only obvious in the summer

excess nutrients from fertilizers

pesticide use along the waterways

heavy metals dumped in the sewage

global warming from human use of fossil fuels

Explanation / Answer

QUESTION-21 SOLUTION)Due extraction the ground water level is deepleting continuously.Hence option 'EXTRACTION' right answer.

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