Why is the current system for the classification of organisms subject to change? A. New organisms are being discovered, and observations of anatomical similarities lead to the identification of these organisms.

B. Molecular evidence is being used to analyze amino acid sequences and other biochemical similarities, which allows for a more
precise comparison of organisms.

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.