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Free GED SCIENCE Exam Braindumps (page: 13)

Page 12 of 76
PDF with 75 Questions

In a population cycle, predators eat and reduce the number of prey. If the number of predators is reduced, the number of prey will gradually increase. Eventually, the predator population will increase, and the population cycle will continue.
Which pair best demonstrates a predator-prey relationship?

  1. honeybees and ants
  2. frogs and toads
  3. robins and pigeons
  4. sheep and cattle
  5. snakes and mice

Answer(s): E



Which factor affects fish survival in lakes with acid deposition?

  1. adjacent soil's ability to neutralize acid
  2. lake's elevation above sea level
  3. number of trees surrounding the lake
  4. quantity of water lilies on the lake
  5. types of fowl inhabiting wooded areas near the lake

Answer(s): A



Science and technology are two related but distinct fields. Their major components are illustrated below.

Which statement represents a technological solution to a problem?

  1. Astronauts conduct an experiment to see how bacteria grow in a space station.
  2. Biologists study birds to learn how they migrate.
  3. Students observe cell division under a microscope.
  4. Engineers design an automobile engine that produces less exhaust.
  5. Geologists analyze soil samples to find out soil composition.

Answer(s): D



Beginnings of new time spans are characterized by major changes in life-forms. Which time would represent the beginning of a new time period (in millions of years ago)?

  1. 430
  2. 395
  3. 300
  4. 225
  5. 100

Answer(s): D






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