11) What the “downside” to extensive use of synthesized nitrogen-containing : 1381008

11) What the “downside” to extensive use of synthesized nitrogen-containing : 1381008.



11) What is the “downside” to extensive use of synthesized nitrogen-containing fertilizers?

A) The use of the fertilizers results in fertilizer resistance in crops.

B) The use of the fertilizers results in loss of a large percentage of crops to fertilizer burn every year

C) Nitrogen-rich runoff contributes to algal blooms and dead zones in bodies of water.

D) The expense of the process makes food less affordable.

E) Synthesized nitrogen interferes with transport in some plants.


12) Which of the following was historically considered to be the biggest limiting factor in worldwide food production up until the last century?

A) nitrogen

B) carbon

C) seed availability

D) land


13) Which of the following statements is true?

A) Glaciers make up about 20 percent of Earth’s freshwater pool.

B) An aquifer is a pool of freshwater perched over the base groundwater that is accessible by humans.

C) Transpiration moves saltwater to the atmosphere and then to freshwater pools on Earth’s surface.

D) About 2.5 percent of Earth’s water is fresh at any given time.

E) The process of respiration is critical for maintaining the freshwater pools on Earth’s surface.


14) The two main processes that return water to the atmosphere are evaporation and:

A) leaching.

B) transpiration.

C) runoff.

D) aquifer containment.


15) Groundwater that is trapped between two layers of impermeable rock is called a/an:

A) confined well.

B) confined aquifer.

C) unconfined aquifer.

D) unconfined well.

16) An astounding 20 percent of the world’s freshwater runoff comes from what single source?

A) icebergs

B) aquifer discharge

C) the Great Lakes

D) the Mediterranean Sea

E) the Amazon River


17) Which of the following water uses is estimated to be the highest in human society?

A) households

B) agriculture

C) sewage systems

D) industry


18) What is the main consideration in determining a trophic level?

A) energy loss level

B) efficiency level

C) feeding level

D) community level

E) production level


19) Herbivores would usually be placed in which trophic level?

A) first

B) second

C) third

D) fourth

E) either the third or fourth


20) Which of the following trophic levels could include carnivores?

A) first

B) second

C) third

D) fourth

E) either the third or fourth


11) What the “downside” to extensive use of synthesized nitrogen-containing : 1381008

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