The cell wall<span> and the </span>central vacuole<span> help to support the plant cell and help it maintain its shape.</span>
B. the speed of the water
Explanation:
The independent variable here is the speed of the water being poured through the tube.
An independent variable is the variable is the whose change does not rely on another.
- The speed of the water is the cause of the sand deposition.
- This is the independent variable.
- The quantity of sand that is deposited is the dependent variable.
- It relies on the speed of the water.
- The dependent variable is the effect of the speed of water being poured.
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The correct answer is circular. Copernicus and other astronomers before him thought that celestial bodies followed a circular orbital path. Copernicus was a Polish astronomer that concluded that the sun is at rest near the center of the universe and the earth is revolving around it annually. This theory is called heliocentric.
