Question 69.69. There is more nitrogen gas in the atmosphere than there is oxyge

Question

Question 69.69. There is more nitrogen gas in the atmosphere than there is oxygen. (Points : 1.25)

   TRUE

   FALSE

Question 70.70. Which of the following defines an ecosystems? (Points : 1.25)

   a group of organisms of the same species interacting together

   all of the living organisms in an area interacting together

   all living organisms and the nonliving environment interacting together

   aspects of the nonliving environment interacting together

   all the places on Earth where living organisms can be found

Question 71.71. In MDCs, many people do not eat enough protein. (Points : 1.25)

   TRUE

   FALSE

Question 72.72. The age structure diagram of MDCs is shaped like (Points : 1.25)

   a pyramid.

   an inverted pyramid.

   a rectangle.

   an oval.

   a cube.

Question 73.73. The biggest problem in moving toward a sustainable society with the LDCs is overconsumption. (Points : 1.25)

   TRUE

   FALSE

Question 74.74. A sustainable society is one that provides all of the goods and services desired by humans. (Points : 1.25)

   TRUE

   FALSE

Question 75.75. In order to have a negative population growth rate, (Points : 1.25)

   the birthrate must exceed the death rate.

   the biotic potential of the population must increase.

   the death rate must exceed the birth rate.

   the carrying capacity for the population must increase.

   only replacement reproduction can occur.

Question 76.76. Why should pregnant women and small children not eat certain fish? (Points : 1.25)

   herbicide contamination

   mercury contamination

   pesticide contamination

   lead contamination

   PCB contamination

Question 77.77. What do hydropower and wind power have in common? (Points : 1.25)

   Both require the building of dams.

   Both lead to an increase in greenhouse gas emissions.

   Both are renewable energy sources.

   Both result in the depletion of fossil fuels.

   Both require the use of photovoltaic cells.

Question 78.78. Which organism would be most impacted by biomagnification? (Points : 1.25)

   eagles

   rabbits

   wheat plants

   earthworms

   corn

Question 79.79. Most of the freshwater in the world is used for (Points : 1.25)

   drinking.

   bathing.

   irrigation.

   watering lawns.

   industrial needs.

Question 80.80. Which of the following is not associated with groundwater depletion? (Points : 1.25)

   subsidence

   sinkholes

   saltwater intrusion

   lowering of the water table

   sediment buildup

Explanation / Answer

69.69: TRUE

There is more nitrogen gas (Approx 78%) in the atmosphere than there is oxygen(Approx 21%).

70.70: all living organisms and the nonliving environment interacting together- Ecology

71.71: TRUE (they eat refined food that is lack of protein).

72.72: An oval.

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