| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.35 |
| Score | 0% | 67% |
These clouds grow upward and can develop into cumulonimbus or thunderstorm clouds.
cirrus clouds |
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nimbus clouds |
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stratus clouds |
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cumulus clouds |
Cumulus clouds are large, puffy, mid-altitude clouds with a flat base and a rounded top. These clouds grow upward and can develop into a cumulonimbus or thunderstorm cloud.
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
exoskeleton |
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bone |
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endoskeleton |
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vertebrate |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
As part of the carbon cycle, plants release carbon into the atmosphere through which process?
photosynthesis |
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decomposition |
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evaporation |
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sedimentation |
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.
During digestion, the kidneys filter substances from the blood. Which of the following is not filtered by the kidneys?
minerals |
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salt |
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water |
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fats |
Chemical waste like excess water, minerals, and salt are filtered from the blood by the kidneys and secreted into the urine. Urine is transported from the kidneys to the bladder through ureters.
Molecules and atoms that are inputs to a chemical reaction are known as which of the following?
reactants |
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components |
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products |
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fuel |
During a chemical reaction molecules and atoms (reactants) are rearranged into new combinations that result in new kinds of atoms or molecules (products).