| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.59 |
| Score | 0% | 72% |
A transition zone between two air masses is called:
boundary |
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front |
|
thunderstorm |
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fog |
An air mass is a large body of air that has similar moisture (density) and temperature characteristics. A front is a transition zone between two air masses.
50°F is how many °C?
-10 |
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58 |
|
10 |
|
122 |
The formula to convert from F° to C° is:
\(C° = {5 \over 9} (F° - 32)\)
plugging in our values gives:
\(C° = {5 \over 9} (50 - 32)\)
\(C° = {5 \over 9} (18)\)
\(C° = {90 \over 9}\)
\(C° = 10\)
This skeletal system is common in arthropods like insects, spiders, and crustaceans.
endoskeleton |
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exoskeleton |
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bone |
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vertebrate |
An exoskeleton (external skeleton) is common in arthropods like insects, spiders, and crustaceans.
In the classification of life, bacteria, archaea and eukaryota are which of the following?
domains |
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species |
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classes |
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kingdoms |
The broadest classification of life splits all organisms into three groups called domains. The three domains of life are bacteria, archaea and eukaryota.
What part of the food chain serves only as food for other organisms?
decomposers |
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primary consumers |
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producers |
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secondary consumers |
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