Cell Membrane = Controls what comes into and out of a cell; found in plant and animal cells
The immune system<span> is made up of a chain of cells, tissues, and organs that work together to protect the body. </span>
Answer: In prehistoric art, finger flutings are lines that fingers leave on a soft surface. Considered a form of cave painting, they occur in caves throughout southern Australia, New Guinea, and southwestern Europe, and were presumably made over a considerable time span including some or all of the Upper Paleolithic.
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