| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.41 |
| Score | 0% | 68% |
The envelope of gases surrounding the planet is called the:
lithosphere |
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hydrosphere |
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atmosphere |
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geosphere |
The biosphere is the global ecological system integrating all living beings and their relationships. This includes their interactions with the lithosphere (the rigid outer part of the earth, consisting of the crust and upper mantle), hydrosphere (all surface water), and atmosphere (the envelope of gases surrounding the planet).
Which of the following members of the food chain are most alike?
scavengers and decomposers |
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herbivores and autotrophs |
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producers and tertiary consumers |
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primary consumers and omnivores |
Like decomposers, scavengers also break down the dead bodies of plants and animals into simple nutrients. The difference is that scavengers operate on much larger refuse and dead animals (carrion). Decomposers then consume the much smaller particles left over by the scavengers.
In the Periodic Table of the Elements, atomic number is equal to which of the following?
number of neutrons in the nucleus |
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number of electrons orbiting the nucleus |
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number of protons in the nucleus |
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number of protons + neutrons in the nucleus |
The Periodic Table of the Elements categorizes elements primarily by the number of protons in their nucleus (atomic number) and secondarily by the characteristics they exhibit.
__________ is caused by a lack of iron in the diet.
anemia |
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shingles |
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diabetes |
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scurvy |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
Convert -20C° to F°.
36 |
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-36 |
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78 |
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-4 |
To convert from C° to F° use:
\(F° = {9 \over 5}C° + 32\)
\(F° = {9 \over 5}(-20) + 32\)
\(F° = {-180 \over 5} + 32\)
\(F° = -36 + 32 = -4\)