Moving up the scale towards more than one organism, [[genetics]] considers how [[heredity]] works between parent and offspring. [[Ethology]] considers group behavior of more than one individual. [[Population genetics]] looks at the level of an entire [[population]], and [[systematics]] considers the multi-species scale of [[lineage]]s. Interdependent populations and their [[Habitat (ecology)|habitats]] are examined in [[ecology]] and [[evolutionary biology]]. A speculative new field is [[astrobiology]] (or xenobiology) which examines the possibility of life beyond the Earth.
== జీవ శాస్త్రము భాగాలు ==