Answer:
A gas-powered lawn mower is a complex machine because for it to function it does more than one motion. For example, it has a wheel and axle system so it can move when powered. And it has a system of simple machines and other parts that are put together to accomplish the task of cutting grass.
Explanation:
Genetic variation is advantageous because it enables some individuals and, therefore, a population, to survive despite a changing environment.
Peripheral membrane proteins are indirectly interactive to the cell membrane, while the integral proteins interact with the peripheral proteins