System of interactions between organisms on land (forests, meadows, deserts, etc.)
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parasite
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An organism that feeds on a living host
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tertiary consumer
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An organism that eats secondary consumers
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organism
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any living thing
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food web
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(ecology) a community of organisms where there are several interrelated food chains
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freshwater ecosystem
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ecosystems found in rivers, lakes, and streams where the water is not salty
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primary consumer
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An organism that eats producer (Plants)
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host
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an animal or plant that nourishes and supports a parasite
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prey
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An organism that is killed and eaten by another organism
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Photosynthesis
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The process plants and other organisms use to create energy form the sun
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Secondary consumers are
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carnivores that eat herbivores
Animals that eat animals that eat plants
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food chain
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A series of steps in which organisms transfer energy by eating and being eaten
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consumer
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An organism (animal) that obtains energy by feeding on other organisms
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Community
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All the different populations that live together in an area
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producer
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an organism that makes its own food
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aquatic ecosystem
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ecosystems found in fresh or salt water.
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biomass
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the total mass of organisms in a given area or volume.
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herbivore
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A consumer (animal) that eats only plants.
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predator
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An animal that lives mostly by killing and eating other animals
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decomposer
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organism that breaks down and obtains energy from dead organic matter
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Population
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A group of individuals that belong to the same species and live in the same area
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Biotic
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Describes living factors in the environment.
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Abiotic
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Non-living things
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trophic level
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each of several hierarchical levels in an ecosystem, comprising organisms that share the same function in the food chain and the same nutritional relationship to the primary sources of energy.
