front 1 Ecology | back 1 The study of ecosystems or how organisms interact with each other and their environment. |
front 2 Biosphere | back 2 ![]() Largest level or organization. The zone of life on earth that includes all living things. |
front 3 Population | back 3 ![]() A group of the same species of individuals living in the same area and interacting with each other in some way. |
front 4 Community | back 4 ![]() Populations of different species that live in a specific location. |
front 5 Ecosystem | back 5 ![]() A community or group of organisms living and interacting with other and their environment (non living factors) |
front 6 Exponential Growth | back 6 Unchecked reproduction of a population of organisms. Occurs when each individual in a population reproduces, the offspring reproduce, and then the offpring of the offspring reproduce. |
front 7 Carrying Capacity | back 7 ![]() The largest population that a given ecosystem can support at any time. It is determined by the availability of resources. |
front 8 Biotic Factors | back 8 Living things or things associated with or the result from the activities of living organisms in an ecosystem. |
front 9 Abiotic Factors | back 9 Nonliving thing in an ecosystem such as rocks, soil, climate, etc. |
front 10 Trophic Level | back 10 ![]() A producing or feeding level in a food chain. |
front 11 Producer | back 11 ![]() 1st trophic level in organization. Plants and other photosynthetic organisms that produce glucose (converts sun energy into chemical energy). Also known as autotroph. |
front 12 Food Chain | back 12 The pathway along with food/energy is transferred from one organism to another. |
front 13 Food Web | back 13 ![]() Shows flow of energy in all of the interconnected food chains in an ecosystem. |
front 14 Consumer | back 14 ![]() An organism that eats other organisms or are heterotrophs.
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front 15 Keystone Species | back 15 Species that plays a key role in maintaining ecosystem stability. |
front 16 Biome | back 16 ![]() A large area dominated by characteristic plants and animals, such as a rain forest, desert, or tundra. Determined by participation and temperature. It is the broadest level of ecological classification within the biosphere. |
front 17 Biodiversity | back 17 The variety of species and total number of individuals of each of species living in a defined area. An important indicator in how healthy and well-functioning an ecosystem is. |
front 18 Limiting Factors | back 18 Limits the potential for a population to grow exponentially due to the availability of resources such as food, water and predators. |
front 19 Heterotroph | back 19 Organisms that eat other organisms for energy. Also known as consumers. |
front 20 Autotroph | back 20 Organisms that produces its own food either by photosynthesis or chemosynthesis. Also known as a producer. |
front 21 Aquatic Ecosystem | back 21 An ecosystem in water - can be marine (saltwater) or freshwater ecosystems. |
front 22 Terrestrial Ecosystem | back 22 Ecosystem found on land. 6 main types:
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front 23 Ecological Pyramid | back 23 ![]() A graphical model that is shaped like a pyramid to show how the energy flows through a food chain. |
front 24 Energy Pyramid | back 24 ![]() A graphical representation of the total amount of chemical energy present at each trophic level of an ecosystem. |
front 25 10% rule | back 25 ![]() Used to explain energy flow in energy pyramids. In each trophic level, 90% of the available energy is used by that level and 10% moves up to the next level when they are eaten. |
front 26 Primary Succession | back 26 ![]() The change in species composition in a defined area over time, starting on ground that has no living things on it. |
front 27 Pioneer Species | back 27 First plants or animals to inhibit bare land. |
front 28 Succession | back 28 When ecosystems change over time through the progressive replacement of species. |
front 29 Secondary Succession | back 29 ![]() Changes in plant and animals life in an established ecosystem, can only occur after an ecosystem is in place. |
front 30 Climax Community | back 30 A stable, long-lasting community that results from succession. |
front 31 Non native species | back 31 Organisms that have invaded established ecosystems and disturbs the balance of the ecosystems. Also known as invasive species. |
front 32 Water Cycle | back 32 ![]() How water is stored and moved between land, air, and living things. |
front 33 Condensation | back 33 ![]() Part of water cycle where water vapor condenses into liquid water by clinging to dust or other small particles suspended in the atmosphere, forming clouds |
front 34 Evaporation | back 34 ![]() Part of the water cycle where liquid water changes to water vapor due to heat from the sun. |
front 35 Transpiration | back 35 ![]() Part of the water cycle where a plant loses water to the atmosphere through the surface of its leaves. |
front 36 Respiration | back 36 ![]() Processes in which organisms exchanges gases with its environment. Part of the water cycle because animals exhale water vapor into the air during respiration. |
front 37 Decomposer | back 37 ![]() Organisms, such as bacteria and fungi, that consume very small bits of organic matter from dead organisms and breaks them down into chemicals that are recycled back into the environment. |
front 38 Symbiosis | back 38 The relationship between two different kinds of living things that live together and depend on each other. Three kinds:
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front 39 Mutalism | back 39 Type of symbiosis where both organisms in the relationship benefit. |
front 40 Parasitism | back 40 Type of symbiosis where one organism benefits (parasite) at the expense of the other (host). |
front 41 Commensalism | back 41 Type of symbiosis where one organism benefits and the other is not affected. |
front 42 Nitrogen Cycle | back 42 ![]() Cycle where nitrogen changes into different chemical forms. Atmosphere is largest reservoir of nitrogen, but is not useable so it needs to be converted into useable forms for organism. |
front 43 Nitrogen Fixing | back 43 ![]() Conversion of nitrogen gas into ammonia and nitrates by bacteria. Bacteria form symbiotic relationship with plants to provide usable nitrogen for plants. |
front 44 Denitrification | back 44 ![]() The conversion of nitrate to gaseous nitrogen by bacteria, which then enters the atmosphere. These bacteria use nitrogen compounds instead of oxygen for their processes of respiration. |
front 45 Carbon Cycle | back 45 ![]() Processes that recycle carbon, one of the most important elements on earth, between earth's soil, atmosphere, and organisms. |
front 46 Oxygen Cycle | back 46 Processes that cycle of oxygen between air, land, and organisms. |
front 47 Renewable Resources | back 47 Resources that regenerate or regrow fast enough for us to keep using them. Ex: radiant energy, livestock, wind and water. |
front 48 Nonrenewable Resources | back 48 Resources which either cannot be renewed at all or take such a long time to renew that people cannot depend on the renewal. Ex: oil and fossil fuels. |
front 49 Greenhouse Effect | back 49 ![]() The process in which the atmosphere reflects radiation bouncing off earth's surface. |
front 50 Greenhouse gases | back 50 ![]() Gasses in the atmosphere which trap radiant energy, such as carbon dioxide. Increased greenhouse gases are thought to be causing global warming. |
front 51 Pollution | back 51 The presence of harmful materials in the environment. |
front 52 Competition | back 52 An interaction between organisms or species, in which fitness of one is lowered by the presence of another |
front 53 Predation | back 53 ![]() Where a predator feeds on a prey. Population size of the predator affect the population size of the prey and vise versa. |