Biosphere-where all living things live; earth

Biome-a natural occurring community of flora a major habitat

Ecosystem-interactions amongst populations in a community (biotic factor) and the physical surroundings is (abiotic factors)

Community-collection of secedal interacting populations that inhabit a common enviroment

Population-group of organisms of one species that interbreed and live and love in the same biome

Organism-anything that posses all the characteristics in life