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  1. Home
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  3. GED SCIENCE

GED GED SCIENCE Exam (page: 7)
GED Section 3: Science
Updated on: 29-Mar-2026

Viewing Page 7 of 61
GED SCIENCE PDF 75 Questions

Which is a useful way of reducing acidification of a lake?

  1. increasing acid emissions from a local power plant
  2. decreasing the lake's plants
  3. adding phosphates to the surrounding soil
  4. stocking the lake with large fish
  5. adding calcium compounds to the lake water

Answer(s): E



According to the information provided, what will happen to a straight metal bar when it is cooled?

  1. bend into a "u" shape
  2. become longer
  3. become more flexible
  4. become shorter
  5. remain the same

Answer(s): D



An autotroph is an organism that can make its own food. A heterotroph, an organism that is unable to make its food, relies on other living things for food and energy.
Which organism listed below could be classified as an autotroph?

  1. bird
  2. frog
  3. deer
  4. snake
  5. tree

Answer(s): E



Blood typing is essentially a chemical reaction that provides data so that blood may be safely transfused from one person to another. The basic objective is to avoid "clumping" that could occur in the recipient when the wrong blood type is received. These "clumps" of red blood cells could block arteries or veins affecting the blood flow to critical body organs, like the heart or the brain.
Exhibit:

Based on the chart and the information, which blood type will not form clumps with either Anti-A reagent serum or the Anti-B reagent serum?

  1. Type A
  2. Type B
  3. Type AB
  4. Types A and B
  5. Type O

Answer(s): E



Exhibit:

Profiles (side views) can be used to tell the geologic changes in mountain ranges.
Which characteristic of the three profiles shown at the left is most useful in arranging them according to age?

  1. the number of valleys in the mountains
  2. the height of the peaks
  3. the mineral content of the rock in the mountains
  4. the number of streams in the mountains
  5. the width of the base of the mountains

Answer(s): B



Viewing Page 7 of 61



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