| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 2.77 |
| Score | 0% | 55% |
Examples of primary consumers include:
all of these |
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cows |
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rats |
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fish |
Primary consumers (herbivores) subsist on producers like plants and fungus. Examples are grasshoppers, cows, and plankton.
The coldest point in the Earth's atmosphere is reached in which atmospheric layer?
mesosphere |
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thermosphere |
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stratosphere |
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troposphere |
In the mesosphere, temperature again drops as altitude increases until the coldest point in the Earth's atmosphere, the mesopause, is reached where temperatures fall to −225 °F (−143 °C).
During digestion, after proteins are broken down where does the undigested food go next?
stomach |
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large intestine |
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esophagus |
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small intestine |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Which of the following is the primary difference between a comet and an asteroid?
comets have an atmosphere |
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asteroids have a coma |
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asteroids contain frozen water |
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comets orbit the Sun |
A comet is a loose collection of ice, dust, and small rocky particles that, in contrast to an asteroid, has an extended atmosphere surrounding the center. When passing close to the Sun, this atmosphere warms and begins to release gases forming a visible coma or tail.
Which of the following states of matter exists at the lowest temperature?
gas |
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solid |
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liquid |
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none of these |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.