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eco part1 2019

braswell, pearson 7th ga, ecology part 1

TermDefinition
birth rate number of births per 1000 organisms over a given amount of time. One way a population my increase
death rate number of deaths per 100 organisms over a given amount of time. One way the population may decrease
immigration moving into a new area
emigration leaving or exiting a group or area
limiting factor limits what can live there, such as amount of food, space, water
population a group of one type of organism in an area
biotic living or dead
abiotic nonliving
organism any living thing
habitat an environment that provides the things an organism needs to live and grow
species one type of living thing that is similar and can reproduce to make fertile offspring
population all the _______ in an are, all of the roaches in the bathroom, all the deer in the yard
community all the different populations in an area
ecosystem all the different populations plus the abiotic factors in an area
population density number of individuals divided by the area
natural selection individuals that are more suited to an area live longer & have the chance to mate more, thus passing on their genes
adaptation behaviors and characteristics that help an animal live in its ecosystem better
niche the very specific job of an organism in its habitat
competition fighting for limited resources
predation means one organism kills another for food
predator hunter
prey hunted
symbiosis two types of different living things living closely together where at least 1 benefits
mutualism a type of symbiosis where both organisms get benefits (+,+) like bees and flowers
commensalism a type of symbiosis where one organism benefits (+) and the other doesn't get bothered (0) like a shark and remora
parasitism a type of symbiosis where one organism benefits and one gets hurt (+,-)
parasite the one in parasitism that gets benefits (like a flea)
host the one in parasitism that gets used (like the dog)
Popular Ecology sets

 

 



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