<span>Sumerians built walls using the natural resource they were surrounded with, which was namely clay. They used this clay to create fired mud-bricks, as there was not any other building stone available at the time. However, the clay mud-bricks proved to be a solid structure for town fortification.</span>
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Answer is 3. Hope this helps!
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Explanation:
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C. Channel proteins bind to molecules too large to diffuse into or out of the cell, and allow them to pass.
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The largest planet in our solar system by far is Jupiter, which beats out all the other planets in both mass and volume.
Jupiter's mass is more than 300 times that of Earth, and its diameter, at 140,000 km