It is called the control experiment
Answer:
<em>The</em><em> </em><em>fi</em><em>rst</em><em> </em><em>option</em>
Explanation:
<em>The</em><em> </em><em>cell</em><em> </em><em>membrane</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>st</em><em>r</em><em>u</em><em>c</em><em>t</em><em>u</em><em>r</em><em>e</em><em> </em><em>that</em><em> </em><em>forms</em><em> </em><em>the</em><em> </em><em>surf</em><em>ace</em><em> </em><em>of</em><em> </em><em>a</em><em> </em><em>cell</em><em> </em><em>separating</em><em> </em><em>it's </em><em>contents</em><em> </em><em>from</em><em> </em><em>the</em><em> </em><em>out</em><em>side</em><em> </em><em>world</em><em>.</em>
<span>The peritoneal organs such as the intestines, liver, stomach, and gall bladder are covered by the peritoneum. This is a membrane that supports the organs by allowing nerves, blood vessels, and lymph vessels to pass through the organs. Without membranes, the proper functions of these organs will be impossible.</span>
Ecosystems can be large and are made of biomes. Some examples of ecosystems are deserts and forests.
If your eyes happen to come into contact with acetic acid, you should immediately wash your eyes with water for no less than 15 minutes
