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29 Cards in this Set
- Front
- Back
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the process of combining nitrogen with hydrogen to form ammonia
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nitrogen fixation
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a pathway formed when a substance enters a living organism, stays for a time in the organism, then returns to the nonliving environment
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biogeochemical cycle
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A(n) ______________ consists of a community and all the physical aspects of its habitat, such as the soil, water, and weather
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ecosystem
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the rate at which organic material is produced by photosynthetic organisms
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primary productivity
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The living organisms in a habitat are called
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biotic factors
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Succession that occurs where plants have not grown before is called
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primary succession
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The many different species that live together in a habitat are called a(n)
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community
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_______________ is the study of the interactions of living organisms with one another and with their environment
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ecology
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an animal that eats plants or other primary producers
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herbivore
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Succession that occurs where previous growth has occurred is called
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secondary succession
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The physical aspects of a habitat are called
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abiotic factors
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The place where a particular population of a species lives is called its
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habitat
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organisms in an ecosystem that first capture energy
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producers
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an organism that obtains energy by consuming plants or other organisms
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consumers
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The first organisms to live in a new habitat are small, fast growing plants called
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pioneer species
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a level in a graphic organizer based on the organism's source of energy
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trophic level
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The path of energy through the trophic levels of an ecosystem
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food chain
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an animal that eats herbivores
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carnivore
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an animal that is both an herbivore and a carnivore
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omnivore
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an organism that obtains energy from organic wastes and dead bodies
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detritivore
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bacteria and fungi that cause decay
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decomposers
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a interconnected group of food chains
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food web
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The number of species living within an ecosystem is a measure of its
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biodiversity
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a diagram in which each trophic level is reresented by a block with a width proportional to the amount of energy stored in the organisms at that trophic level
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energy pyramid
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the dry weight of tissue and other organic matter found in a specific ecosystem
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biomass
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A somewhat regular progtression of species replacement is called
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succession
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water retained beneath the surface of the Earth
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ground water
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the evaporation of water from the leaves of plants
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transpiration
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Nagy Chapter 17 vocabulary
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cut apart and study
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