How Populations SurviveChapter 5, Lesson 3

limiting factorcarrying capacity

endangered speciesextinct

threatened species

limiting factor – anything that controls the growth or survival of a population

predators

camouflage food sources

predators

carrying capacity – the maximum population size that the resources in an area can support

endangered species – a species that is in danger of becoming extinct

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extinct – a species that has died out completely

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threatened species – a species that may become endangered

urban growth – the movement from a rural (country) area to an urban (city) area

pollution – when the air, water, or soil is dirtied by chemicals and/or trash

strip mining – when people carve the land to get rocks that are near the surface

fertilizer – chemicals used to make plants grow more effectively

agriculture – farming; cultivating or growing plants for food or to meet other needs and wants