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T#9 Ecology

This stack includes both terms/defs AND "target practice" with images.

ecology study of how organisms relate with each other and with their non-living environment (ety: ecos = taking care of the house, ology = study of)
biotic factor all the living parts of an ecosystem
abiotic factor all the non-living parts of an ecosystem
population a group of organisms of the same species living together in an area
community a group of organisms of different species living together in an area
ecosystem a community plus all the abiotic factors around them
biosphere all the ecosystems on Earth together as a group
population density measurement of the number of organisms living in a certain area.
limiting factor anything that keeps a population from growing out of control
carrying capacity the largest number of organisms an area can support for a long period of time
sustainability when natural resource renewal is balanced with human consumption and other human impacts on the environment
symbiosis any close relationship between two organisms of different species
mutualism a symbiotic relationship where both organisms benefit
commensalism a symbiotic relationship where one organism benefits and the other is unaffected
parasitism a symbiotic relationship where one organism benefits and the other is hurt
habitat the physical location where an organism lives
niche the ecological role of an organism in its habitat (decomposer, consumer, or producer…and its place in the food web)
food chain a way of showing how food/energy passes from one organism to another
food web a bubble-map showing all the food/energy connections between different species in a community
ecological pyramid a model that shows how food/energy travels through the biosphere: energy gets used up by organisms along the way up from producers to higher level consumers
water cycle the paths water follows in the environment through evaporation, condensation, and precipitation
evaporation when water changes from its liquid phase to gas phase (without boiling!)
condensation when water changes from its gas phase to liquid phase (the way clouds form)
precipitation when condensed water from clouds falls from the sky as rain or snow
matter the stuff things are made of...it has mass and takes up space
energy the ability to do work...comes in forms such as motion, heat and chemical
producer organism in an ecosystem that makes its own food by doing photosynthesis
consumer organism in an ecosystem that must eat to get energy for life
decomposer organism in an ecosystem that breaks down dead material
Created by: wholt