Non-living things are objects that do not have life. They do not grow, reproduce, or respond to stimuli like living organisms do. Examples of non-living things include rocks, water, air, and buildings. These items can be found in nature or created by humans, but they do not possess any biological functions. Non-living things can be classified into two main categories: natural and artificial. Natural non-living things are those that occur in nature, such as soil and minerals. Artificial non-living things are made by humans, like furniture and machines. Both types play important roles in our environment and daily lives.