noun

the physical world including all living things as well as the land and the oceans

noun

the natural world, including the land, water, air, plants, and animals, especially considered as something that is affected by human activity

noun

the relationship between the plants, animals, and the environment in a particular area

noun

valuable substances such as wood and oil that exist in a country’s land and ocean

noun

all the plants and animals in a particular area, considered as a system with parts that depend on one another

noun

the parts of the Earth’s surface and atmosphere where plant and animal life can exist

noun

things such as coal, trees, and oil that exist in nature and can be used by people

noun

substances such as coal or iron that are in their natural state before being changed by chemical processes

noun

earth, air, fire, or water, considered in the past to be the substances that all things were made of

noun

the study of the environment and the way that plants, animals, and humans live together and affect each other