The branch of science concerned with the interrelationship of organisms and their ENVIRONMENT, especially as manifested by natural cycles and rhythms, community development and structure, interactions between different kinds of organisms, geographic distributions, and population alterations. (Webster's, 3d ed)
Bionomics,Ecologies
D005260
Female
Females
D005423
Siphonaptera
An order of parasitic, blood-sucking, wingless INSECTS with the common name of fleas.
Aphaniptera,Fleas,Flea
D000220
Adaptation, Biological
Changes in biological features that help an organism cope with its ENVIRONMENT. These changes include physiological (ADAPTATION, PHYSIOLOGICAL), phenotypic and genetic changes.
Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA.
Animal,Metazoa,Animalia
D001717
Birds
Warm-blooded VERTEBRATES possessing FEATHERS and belonging to the class Aves.
Aves,Bird
D012377
Rodentia
A mammalian order which consists of 29 families and many genera.