| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.81 |
| Score | 0% | 76% |
Water freezing or boiling is an example of which of the following?
heating |
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cooling |
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phase transition |
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sublimation |
A substance undergoes a phase transition when it moves from one state of matter to another, for example, when water freezes or boils.
In the food chain, consumers are classified as which of the following?
secondary |
|
tertiary |
|
all of these |
|
primary |
Most animals consume other organisms to survive. Consumers (heterotrophs) are divided into three types, primary, secondary, and tertiary, based on their place in the food chain.
The __________ is a system of muscles that allows breathing.
diaphragm |
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trachea |
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bronchioles |
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pulmonary |
The diaphragm is a system of muscles that allows breathing. During inhalation, the diaphragm expands and air rushes in to fill the space created. Then, during exhalation, the diaphragm contracts and forces the air back out.
__________ is caused by a lack of iron in the diet.
diabetes |
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scurvy |
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anemia |
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shingles |
Anemia, which may cause weakness, dizziness, and headaches is caused by a lack of iron in the diet.
Which of the following is the narrowest classification of life?
genus |
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domain |
|
family |
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species |
The narrowest classification of life, species, contains organisms that are so similar that they can only reproduce with others of the same species.