| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.07 |
| Score | 0% | 61% |
Herbivores are __________ that subsist on producers like plants and fungus.
tertiary consumers |
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secondary consumers |
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primary consumers |
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scavengers |
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?
troposphere |
|
thermosphere |
|
stratosphere |
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mesosphere |
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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small intestine |
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large intestine |
|
esophagus |
Food is mixed with gastric acid and pepsin in the stomach to help break down protein.
Blood pressure is generally highest in which of the following?
capillaries |
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heart |
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arteries |
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veins |
Arteries are thick-walled because they carry oxygenated blood at high pressure, veins are comparatively thin-walled as they carry low-pressure deoxygenated blood.
Cirrus clouds are thin, wispy clouds composed of ice crystals. At what elevation to cirrus clouds form?
low-altitude |
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mid-altitude |
|
ground level |
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high-altitude |
Cirrus clouds are thin, wispy high-altitude clouds composed of ice crystals that originate from the freezing of supercooled water droplets. Cirrus clouds generally occur in fair weather and point in the direction of air movement at their elevation.