| Your Results | Global Average | |
|---|---|---|
| Questions | 5 | 5 |
| Correct | 0 | 3.45 |
| Score | 0% | 69% |
The number system most used in science is the:
British system |
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American system |
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metric system |
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English system |
The metric system is a number system that designates one base unit for each type of measurement. For example, the base unit for length is the meter and the base unit for mass is the gram.
What part of the food chain serves only as food for other organisms?
producers |
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primary consumers |
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decomposers |
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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
As a cold front moves into an area, the heavier cool air __________ the lighter warm air that it is replacing.
cancels out |
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pushes above |
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pushes under |
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mixes with |
A cold front is a warm-cold air boundary with the colder air replacing the warmer. As a cold front moves into an area, the heavier cool air pushes under the lighter warm air that it is replacing. The warm air becomes cooler as it rises and, if the rising air is humid enough, the water vapor it contains will condense into clouds and precipitation may fall.
I biome is made up of naturally occurring flora and fauna. Fauna is which of the following?
habitats |
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animals |
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plants |
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minerals |
A biome is a large naturally occurring community of flora (plants) and fauna (animals) occupying a major habitat (home or environment).
In cell biology, what part of the cell contains organelles?
cell wall |
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cytoplasm |
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cell membrane |
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nucleus |
The nucleus of a eukaryotic cell contains the genetic material of the cell and is surrounded by cytoplasm which contains many organelles.