| A | B |
|---|
| abiotic factor (17-1) | the physical aspects of a habitat |
| biodiversity (17-1) | the number of species living within an ecosystem |
| biogeochemical cycle (17-3) | a pathway formed when a substance enters a living organism |
| biomass (17-1) | the dry weight of tissue and other organic matter found in a specific ecosystem |
| biotic factors (17-1) | the living organisms in a habitat |
| carnivore (17-1) | an animal that eats herbivores |
| community (17-1) | the many different species that live together in a habitat |
| consumer (17-2) | organisms that obtain energy by consuming plants or other organisms |
| decomposer (17-2) | bacteria and fungi that cause decay |
| detritivore (17-2) | an organism that obtains energy from organic wastes and dead bodies |
| ecology (17-1) | the study of the interactions of living organisms with one another and with their environment |
| ecosystem (17-1) | a community and all the physical aspects of its habitat |
| energy pyramid (17-2) | a diagram in which each trophic level is represented by a block with a width proportional to the amount of energy stored in the organisms at that trophic level |
| food chain (17-2) | the path of energy through the trophic levels of an ecosystem |
| food web (17-2) | an interconnected group of food chains |
| ground water (17-3) | water retained beneath the surface of Earth |
| habitat (17-1) | place where a particular population of a species lives |
| herbivore (17-2) | an animal that eats plants or other primary producers |
| nitrogen fixation (17-3) | the process of combining nitrogen with hydrogen to form ammonia |
| omnivore (17-2) | an animal that is both an herbivore and a carnivore |
| pioneer species (17-1) | the first organisms to live in a new habitat |
| primary productivity (17-2) | the rate at which organic material is produced by photosynthetic organisms |
| primary succession (17-1) | succession that occurs where plants have not grown before |
| producer (17-2) | organisms in an ecosystem that first capture energy |
| secondary succession (17-1) | succession that occurs where previous growth has occurred |
| succession (17-1) | a somewhat regular progression of species replacement |
| transpiration (17-3) | the evaporation of water from the leaves of plants |
| trophic level (17-2) | a level in a graphic organizer based on the organism's source of energy |
