The environment covers everything that exists in the universe excluding nothing that can be known or measured. It is the sum total of all existing life forms on earth excluding the mineral content of the earth and space dust. The environment is made up of living organisms such as plants, animals and even inanimate objects like rocks, buildings and spaceships. The environment is a self-sustaining cycle of living creatures and non-living objects such as inorganic particles of rock colliding together and being driven together again by an internal force. The environment is a vast ocean of living space and time and is the reason why there is no end to it.

A physical environment is one that is not influenced by external factors like climate, soil and sky, which are the most important components of the external environment. Physical environments are referred to as the surroundings in which living things occur. They include oceans, landmasses, lakes, rivers, and other bodies of water and the surrounding conditions such as air, land and skies.

A biological environment is one in which living things grow and reproduce in order to provide a source of food, oxygen and energy. A physical environment is the totality of all the physical surfaces in and around a place where living things occur. It is the sum total of all the living things existing at a particular place at a particular time in the Earth’s history. A cultural environment is the combination of external and internal variables including climate, soils, skies, biotic communities, artistic styles, dietary practices, family structures and norms, language, literature and other modes of communication and interacting with each other.