| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.56 |
| Score | 0% | 71% |
A large naturally occurring community of flora and fauna occupying a major habitat is:
a food chain |
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a biome |
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a community |
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a population |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
These clouds grow upward and can develop into cumulonimbus or thunderstorm clouds.
cumulus clouds |
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nimbus clouds |
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stratus clouds |
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cirrus 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.
Generally, an atom has __________ negative electrons orbiting the nucleus as it does positive protons inside.
more |
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equal numbers of |
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fewer |
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double the number of |
An electron is a subatomic particle that orbits the nucleus of an atom. It carries a negative electric charge. Generally, an atom has the same number of negative electrons orbiting the nucleus as it does positive protons inside.
Which of these represents the path of blood flow through the heart?
left atrium → right ventricle → lungs → left atrium → right ventricle |
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right atrium → right ventricle → lungs → left atrium → left ventricle |
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left atrium → left ventricle → lungs → right atrium → right ventricle |
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right atrium → left ventricle → lungs → left atrium → right ventricle |
To provide oxygen to the body, blood flows through the heart in a path formed by the right atrium → right ventricle → lungs → left atrium → left ventricle → body. When blood enters the right side of the heart it is deoxygenated. It enters the left side of the heart oxygenated after traveling to the lungs.
The respiratory and circulatory systems are similar in that they:
transport nutrients |
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deoxygenate blood |
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transport oxygen |
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add carbon dioxide |
Like the respiratory system, the circulatory system serves to transport oxygen throughout the body while removing carbon dioxide. In addition, the circulatory system transports nutrients from the digestive system.