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chapter1 section 1

populations and comunities

organism living things
habitat An environment that provides the organism needs to live grow and reproduce
biotic factors the living parts of a habitat
abiotic factors the nonliving parts if an organisms
photosynthesis plants and algae need water,along with sunlight and carbon dioxide to make their own food in process called photosynthesis
species is a group of organisms that are physically similar
population. all the members of one species in a particular area are referred to as a population.
community all the different populations that live together in an area make up a community.
ecosystem organisms and their nonliving surroundings make up an ecosystem
ecology the study of how living things interact with each other and their enviroment
estimate an approximate of a number based on reasonable assumptions
birth rate the number of births in a population in certain amount of time
death rate the number of deaths in a population in a certain amount of time
immigration moving into a population
emmigration leaving a population
population density the number of indiviuals in an area a specific size
limiting factor a factor that causes a population to decrease
carrying capacity the largest population that an area can support
Created by: srosa