Hello!! Your best answer would be A - Claudius Ptolemy. Ptolemy believed that the Earth was the center of the universe, whereas Copernicus believed that the sun was the center. Kepler discovered 3 major laws of planetary motion, while Newton discovered gravity. I hope this has helped. Have a great evening.
Change to the landscape from construction. The answer is c because if there is construction, they are probably building something on top of what used to be that ecosystem.
A cell membrane, often referred to as a plasma membrane, is present in every cell and serves as a barrier between the interior of the cell and the outside world. The cell membrane is a lipid bilayer that is semipermeable. The cell membrane regulates the flow of substances into and out of the cell.
The cell membrane, commonly referred to as the plasma membrane, serves as the body of a cell. It also keeps the environment inside the cell constant, and that membrane has many functions. One is to introduce nutrients into the cell while removing toxic chemicals from it. Another is that the cell's plasma membrane, which is its outer membrane, will have proteins that interact with other cells. These proteins may be glycoproteins, which also contain a sugar moiety, or lipid proteins, which contain both a protein and a fatty acid. Proteins that stick outside of the plasma membrane also allow for cell-to-cell communication. The cell membrane also provides some structural support.
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