| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.34 |
| Score | 0% | 67% |
Earth's troposphere layer is which of the following?
hottest |
|
closest to the surface |
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coldest |
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farthest from 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 10-3?
milli |
|
kilo |
|
centi |
|
mega |
In the metric system, milli is the prefix for 10-3.
Leafy vegetables, beans, potatoes, fruits, and whole grains are good sources of:
fiber |
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saturated fat |
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protein |
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unsaturated fat |
Fiber provides bulk to help the large intestine carry away waste. Good sources of fiber are leafy vegetables, beans, potatoes, fruits, and whole grains.
Cellular fermentation takes place:
in the presence of oxygen |
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in plant cells |
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anaerobically |
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aerobically |
If no oxygen is present, cellular respiration is anaerobic and will result in fermentation where either lactic acid or alcohol is used instead of oxygen.
In taxonomy, domains are the broadest classification of life. How many domains are there?
5 |
|
dozens |
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6 |
|
3 |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.