the process of eroding or being eroded by wind, water, or other natural agents
the natural home or environment of an animal, plant, or other organism :
a biological community of interacting organisms and their physical environment.
power derived from the utilization of physical or chemical resources, esp. to provide light and heat or to work machines.
Material such as coal, gas, or oil that is burned to produce heat or power!
any characteristic which helps an organism to survive in its particular environment
climate, plants, and animals in a broad region, eg. tundra, desert, deciduous forest
a plant-eating animal; a primary consumer.
any animal that feeds on animal matter; a secondary consumer
an animal that preys on other animals.