| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.24 |
| Score | 0% | 65% |
Which of the following is not part of the carbon cycle?
respiration |
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decomposition |
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photosynthesis |
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precipitation |
The carbon cycle represents the ciruit of carbon through Earth's ecosystem. Carbon dioxide (CO2) in the atmosphere is absorbed by plants through photosynthesis. Plants then die and release carbon back into the atmosphere during decomposition or are eaten by animals who breathe (respiration) the carbon into the atmosphere they exhale and produce waste which also releases carbon as it decays.
What part of the food chain serves only as food for other organisms?
secondary consumers |
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primary consumers |
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decomposers |
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producers |
Producers (autotrophs) serve as a food source for other organisms. Typical producers are plants that can make their own food through photosynthesis and certain bacteria that are capable of converting inorganic substances into food through chemosynthesis
DNA is encoded through a combination of which of the following?
gametes |
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nucleotides |
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helix |
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genes |
Deoxyribonucleic acid (DNA) is the molecule that contains genetic information. DNA is encoded through a combination of nucleotides that bind together in a specific double helix pattern.
Which of the following states of matter exists at the highest temperature?
solid |
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none of these |
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liquid |
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gas |
Solids exist at a lower temperature than liquids which exist at a lower temperature than gases.
The gravitational interaction of Earth and the Moon is responsible for which of these?
the northern lights |
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day and night cycle |
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tides |
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seasons |
Tides are caused by the gravitational interaction of Earth and the Moon.