It can also include other people, animals, plants, and furniture. Ranges of indoor environments can include schools, buses, cars, houses, or any other type of enclosed area. Similar to outdoor environments, air pollutants can affect indoor environments. Indoor air pollution can have significant health effects, like outdoor air pollution. Pollutants that exist in outdoor environments can easily enter our air indoors.
Water is one of the most important substances on Earth.
Every plant and animal on Earth needs water to live. Without water, humans would die. Some plants and animals spend their entire lives in water and rely on it for survival. Water is essential for healthy living both indoors and outdoors. Drinking water enters our homes, schools, and office buildings through one set of pipes and exits through a separate set of pipes.