| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.64 |
| Score | 0% | 73% |
Earth's troposphere layer is which of the following?
farthest from the surface |
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coldest |
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hottest |
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closest to the surface |
The Earth's atmosphere has several layers starting with the troposphere which is closest in proximity to the surface. Containing most of the Earth's breathable air (oxygen and nitrogen), it's a region with warmer temperatures closer to the surface and cooler temperatures farther away which results in the rising and falling air that generates weather.
In the metric system, what prefix represents 103?
milli |
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mega |
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centi |
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kilo |
Kilo is the metric system prefix for 103.
__________ is caused by a lack of iron in the diet.
diabetes |
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scurvy |
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shingles |
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anemia |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
The number system most used in science is the:
American system |
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metric system |
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British system |
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English system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.
During digestion, after proteins are broken down where does the undigested food go next?
small intestine |
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large intestine |
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esophagus |
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stomach |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.