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Chp.16 vocab

QuestionAnswer
The study of the interactions of living organisms w/ one another and their environment. ecology
place where a particular population of species lives. habitat
The different species that live together in a community. community
Community & all of the physical aspects of it's habitat. ecosystem
Physical aspects of a habitat; nonliving abiotic factors
organisms in a habitat. biotic factors
The # and variety of organisms in a given area. biodiversity
1st organisms to live in a new habitat; small,fast-growing plants. pioneer species
Progression of species replacement. succession
Occurs where plants have not grown before. primary succession
Occurs where previous growth has occured. secondary succession
the rate at which organic material is produced by photosynthetic organisms. primary productivity
Organisms that first obtain energy. producers
Obtains energy by consuming plants or other organisms. consumers
A level in a diagram based on the organism's source of energy. trophic level
The path of energy through the trophic levels of an ecosystem. food chain
Eats only plants herbivores
Eats only animals carnivores
Eats both plants and animals omnivores
Obtains energy from organic wastes and dead bodies. detritivores
Bacteria and fungi that cause decay. decomposers
Interconnected group of food chains. food web
Diagram in which each trophic level is represented by a block. energy pyramid
The dry weight of tissue and other organic matter found in an ecosystem. biomass
Pathway formed when a substance enters a living organism, stays for a time, then returns to the environment. biogeochemical cycle
Water retained beneath the surface of the Earth. groundwater
The evaporation of water from the leaves of plants. transpiration
The process of combining nitrogen w/ hydrogen to from ammonia. nitrogen fixation
Created by: Nyssa_Needham
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