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8th Grade Science EOG Extend2 Part III
Test Description: 8th Grade Science ext2 part III
Instructions: Answer all questions to get your test result.
1) Which is the best reason to conserve the natural resources of Earth?
A
to make sure they can be recycled
B
to make sure their cost remains low
C
to make sure they are available for future generations
2) In which ocean zone is the greatest number of producers found?
A
deep zone
B
surface zone
C
transition zone
3) Why are large numbers of fish usually found in areas of upwelling?
A
there is a large amount of food in those areas
B
there are fewer predators living in those areas
C
there is less oxygen in the waters of those areas
4) Which will most likely result if hot water is continually dumped into a stream?
A
nitrate levels in the stream will increase
B
phosphorous levels in the stream will decrease
C
dissolved-oxygen levels in the stream will decrease
5) Why is chlorine added to swimming pools?
A
to kill bacteria in the water
B
to make the water taste better
C
to make the water blue
6) Which statement is true about undisturbed layers of rock on the side of a mountain?
A
the layers of rock closest to ground level are older than the layers at the top
B
the rock layers closest to ground level have more fossils than in the top layers
C
the layers of rock that are darkest in color are older than those that are lighter
7) Which is true about the continents of the world?
A
they have the same climate
B
they are all near the equator
C
they are slowly moving along tectonic plates
8) Which is a treatment for bacterial diseases?
A
alcohol wipes
B
antiseptic soap
C
penicillin pills
9) What is the best way people can avoid diseases caused by viruses?
A
taking aspirin
B
getting vaccinated
C
injecting antibiotics
10) Which would least likely influence global climate changes?
A
producing energy using hydroelectric plants
B
producing energy using coal
C
producing energy using oil
*select an answer for all questions
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