4.1 Understand the terms population, community, habitat and ecosystem

• Population: number of a certain type or types or organism(s) living in a particular area at a particular time
• Community: Interacting group of various species in a common location: typically relying on one another
• Habitat: physical location of an organism, including what is available to it
• Environment: the natural biological factors that affect a species or particular organism (i.e. humans)