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Science - Chapter 4
Vocabulary
| Term | Definition |
|---|---|
| Organism | A living thing |
| Habitat | the natural home or environment of an animal, plant, or other organism. |
| Biotic Factor | Any living part of the environment with which an organism might interact |
| Abiotic Factor | A nonliving part of an organism's habitat. |
| Species | A group of similar organisms that can breed and produce fertile offspring. |
| Population | All the members of one species in a particular area |
| Community | All the different populations that live together in an area |
| Ecosystem | A biological community of interacting organisms and their physical environment. |
| Ecology | The study of how living things interact with each other and their environment |
| Producer,An organism that can make its own food. | |
| Consumer,An organism that obtains energy by feeding on other organisms | |
| Herbivore,A consumer that eats only plants. | |
| Carnivore,A consumer that eats only animals. | |
| Omnivore,An animal that eats both plants and animals | |
| Scavenger,A carnivore that feeds on the bodies of dead organisms | |
| Decomposer,An organism that breaks down wastes and dead organisms | |
| Food Chain,series of steps in an ecosystem in which organisms transfer energy by eating and being eaten | |
| food web,A community of organisms where there are several interrelated food chains | |
| energy pyramid,A diagram that shows the amount of energy that moves from one feeding level to another in a food web | |
| Evaporation,The change of a substance from a liquid to a gas | |
| Condensation,The change of state from a gas to a liquid | |
| precipitation,any form of water that falls to Earth's surface from the clouds | |
| nitrogen fixation,the chemical processes by which atmospheric nitrogen is assimilated into organic compounds, especially by certain microorganisms as part of the nitrogen cycle. | |
| biome,A group of ecosystems that share similar climates and typical organisms | |
| climate,Overall weather in an area over a long period of time | |
| desert,An extremely dry area with little water and few plants | |
| rain forest,Dense forest that receives high amounts of rain each year | |
| emergent layer,The tallest layer of the rain forest that receives the most sunlight. | |
| canopy,Dense covering formed by the leafy tops of tall rain forest trees | |
| understory,the underlying layer of vegetation in a forest or wooded area, especially the trees and shrubs growing between the forest canopy and the forest floor. | |
| grassland,A biome where grasses are the main plant life | |
| savanna,An area of grassland with scattered trees and bushes | |
| deciduous forest,A biome with four seasons, plants shed leaves in the fall and grow new ones in the spring. | |
| boreal forest,Dense forest of evergreens located in the upper regions of the Northern Hemisphere. | |
| coniferous trees,trees that produce their seeds in cones and have leaves shaped like needles | |
| tundra,A cold and treeless biome with low-growing vegetation. | |
| permafrost,permanently frozen layer of soil beneath the surface of the ground | |
| estuary,the area where a freshwater stream or river merges with the ocean | |
| intertidal zone,the narrow band of coastline between the levels of high tide and low tide | |
| neritic zone,Area of ocean that extends from the low-tide line out to the edge of the continental shelf | |
| biogeography,Study of past and present distribution of organisms | |
| continental drift,the gradual movement of the continents across the earth's surface through geological time. | |
| dispersal,the movement of organisms from one place to another | |
| exotic species,organisms that are not native to a particular area |
Created by:
grschmitkons
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