Aspect of the environment that is not a living organism, such as soil, water or air.
Large community of plants and animals distinguished by the dominant forms of animal and plant life and the climate.
Part of the planet and atmosphere with living organisms.
Components of the environment that are living, or were alive and then died, such as plants or animals.
Study of how living organisms interact with each other and with their environment.
Process by which specific organisms (including all plants) use the sun's energy to make their own food from carbon dioxide and water; process that converts the energy of the sun, or solar energy, into carbohydrates, a type of chemical energy.
Introduces definition of ecology and describes abiotic and biotic factors.