Ecosystem all of the organisms living in an area together with their physical environment Ecosystems need 5 things to survive o Oxygeno Watero Energyo Mineral nutrientso Living organisms Biotic living and once living things (plants, animals, dead organisms, leaves, and waste products) Abiotic non-living things (rocks, water, sand, sunlight, temperature) Organism An individual living thing Species a group of organisms that are closely related & can mate to produce fertile offspring Population all the members of the same species that live in the same place at the same time Community a group of the same species that live in the same place & interact with each other Habitat the place an organisms live that has specific characteristics that the organisms that live there need to survive natural selection the unequal survival & reproduction that results from the presence or absence of particular traits Evolution a change in the genetic characteristics of a population from one generation to the next Related posts: Conservation Biology NRS 223 Test 2 Chapter 4 Chapter 5 Conservation Biology Prev Article Next Article