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| Is the scientific study of interactions amoung organisms and thier environment,surroundings. |
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| Contains the combined portions of the planet in which all life exits, including, land, water,air, or atmosphere. |
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| A group of organisms so similar to one another that they can breed and produce fertile offspring. |
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| Groups of individuals that belong to the same species and live in the same area. |
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| Assemblages of diffrent populations that live together in a defined area. |
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| A collection of all the organisms that live in a particular place, together with their nonliving, or physical, environment. |
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| A group of ecosystems that have the same climate and similar dorminant communities. |
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| Use energy from the environment to fuel the assembly of simple inorganic compounds into comlex organic molecules |
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| Organisms that can caputure energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autoroph. |
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| Automorphs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches |
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| Automorphs use light energy to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates such as sugars and starches. |
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| When organisms use chemical energy to produce carbohdrates. |
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| Organisms that rely on other organisms for their energy and food supply. |
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| What Heterotrophs are called. |
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Obtain energy by eating only plants.
ex.cows,caterpillars,and deer |
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Obtain energy by eating animals.
ex.snakes,dogs,owls, |
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| Eat both plants and animals. |
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Feed on plant and animal remains and other dead matter.
ex.mites,earth worms,snails,and crabs |
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Breaks down organic matter.
ex,Bacteria,and fungi |
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| A series of steps in which organisms transfer energy by eating and being eaten |
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| Links all the food chains in an ecosystem together. |
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| Each step in a food chain or food web. |
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| A diagram that shows the relative amounts of energy or matter contained within each trophic level in a food chain or web. |
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| The total amount of living tissue within a given trophic level |
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| Process in which elements, chemical compounds, and other forms of matter,are passed from one organism to another and from one part of the biosphere to another |
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| The process by which water changes from liquid form to an atmospheric gas. |
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| When water enters the atmosphere by evaporating from the leaves of plants. |
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| The chemical substances that an organism needs to sustainlife. |
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| Such Bacteria, which live in the soil and on the roots of plants called legumes, convert nitrogen gas into ammonia ina process |
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| When soil bacteria convert nitrates into nitrogen gas |
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| The rate at which organic matter is created by producers. |
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| When an ecosystem is limited by a single nutrient that is scarce or cycles very slowly. |
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