14.1, 14.2, 14.3, 14.4, 14.5

All the biotic and abiotic factors in an area where organisms live

Composed of all the physical, chemical, and biologic factors that species need to survive

When two species are competing for the same resources

Species that occupy similar niches but live in different geographic regions

When two organisms fight over the same resource

The process by which one organism captures and feeds on another

A close ecological relationship between two or more organisms of different species that have direct contact

Interspecies interaction in which both organisms benefit from one another

A relationship where species that directly harmed the host

The measurement of the number or individuals living in a defined space