The term for materials, such as plastic, that will not decompose is nonbiodegradable. Nonbiodegradable waste is waste which cannot be decomposed by biological process. Biodegradable waste on the other hand includes any organic matter in waste which can be broken down into carbon dioxide, water, methane or simple organic molecules.
After lifting weights for two weeks, Joe finds that the weights he has been lifting do not feel very heavy to him anymore. This is an example of Muscle adaptation principle - D.
