Which simple machine can be described as a rope that is threaded through a wheel or disk?
The correct answer is B - Pulley
A pulley is a simple machine that is used to lift loads. It consists of a wheel on which a rope is placed and the rope is pulled by the person towards himself to lift the load that is tied on the other side of the rope. There are three main types of pulleys: fixed, movable, and compound.
That organism might rely on the diffusion of oxygen and carbon dioxide through their outer body covering if it's : B. small and lives in water Organisms that live in water cannot get their oxygen with the same process like we did on the land. They need the process of diffusion in order to do it
