a part of the ecosystem like plants, animals and bacteria that require energy to survive and have basic needs that must be met

the parts of an ecosystem that have NEVER been living and NEVER will be; examples include the sun, water, air, soil, weather conditions, and rocks

absolutely necessary or extremely important

the way in which all things (living and nonliving) work together in a shared community

An enclosed environment with a layer of dirt at the bottom in which plants and small animals can live