All living things come from other living things. Some come into the world right out of their mothers’ bodies; others hatch from an egg. They look more and more like their parents as they grow.
Therefore, living things can grow, move, breathe, and reproduce. Anything that cannot grow, move, breathe and reproduce are called nonliving things.
Living things are also sensitive to the environment. They eat and produce waste. The waste is also called excretion. However, plants and trees are also living; because they need air, water, and nutrients to live.
Why do you think we need to know if something is living or nonliving?