Multiple choice questions, each is either 1) cutaneous membrane 2) mucous membrane 3) synovial membrane 4) serious membrane q #1: type of membrane that secretes fluids around organs. q #2: type of membrane that forms the skin. q #3: type of membrane that lines open body cavities. q #4: type of membrane adapted for absorption or secretion. q #5: peritoneum, pericardium, & pleura are examples of this type of membrane. q #6: type of membrane that contains a visceral & a parietal layer. q #7: type of membrane that lines the fibrous capsules surrounding joints.

igneous rocks which formed by the crystallization of magma at the surface of the earth called extrusive rocks. they are characterized by fine-grained textures because the rapid cooling at or near the surface did not provide enough time for large crystals to grow.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.