Free GED SCIENCE Exam Braindumps
GED Section 3: Science Questions 131–135 (page: 28)

Exhibit:
Which title best describes the diagram?

-- Exhibit --
The most realistic description of energy flow through an ecosystem is a food web that represents an interconnected series of food chains. In general, the greater the number of alternative channels through which energy can flow, the greater the stability of the food web and the ecosystem.


The diagram shows a typical food web for a wet meadow. The hawk and the fox obtain nourishment by preying upon rabbits, frogs, snakes, and mice. The fox may even eat grasshoppers. If, for example, the rabbit population is reduced, possibly because of bad weather during the breeding season, the fox and hawk would shift their predatory pressure to other forms of prey. The rabbit population would then have a chance to bounce back and the ecosystem would remain stable.
-- Exhibit --
In the food web diagram shown, which organisms directly consume the grasshoppers?

Getting rid of solid waste is a major problem in many cities. Open spaces for landfills are becoming scarce. Burning solid waste may produce harmful gases as well as particles in the surrounding air. Recycling is useful, but effective techniques for recycling some materials have yet to be developed. Marine disposal may damage the delicate ecosystems in this fragile environment.
Which of the following solid waste disposal techniques would MOST LIKELY result in air pollution?

A liquid's boiling point is the temperature at which the pressure of its escaping vapor is equal to the atmospheric pressure.
Reduced pressure on the surface of a liquid results in a reduction in the vapor pressure needed for boiling to occur. At higher elevations, thinner air causes a reduction in atmospheric pressure, and liquids boil at lower temperatures.
At lower elevations, the atmospheric pressure is higher, and liquids boil at higher temperatures.


If Diane boiled water for coffee while camping in the mountains, which statement best describes what would happen to the water?

Almost all food containers and packages have nutrition labels such as the one below, which might appear on the container of a soft drink. These labels indicate the number of servings in the container and the ingredients of its contents. They will usually list the amount of fat, sodium, sugars, carbohydrates, and protein that are in the contents. People who are diabetic can not consume a large amount of sugar in their diet.
Which statement best describes the expected and MOST sensible reaction of a person who is diabetic when he or she reads the label on this container of soft drink?
Exhibit:

Exhibit