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Keystone Species

"A keystone species is a species which maintains the balance and diversity of its community. Often keystone species are predators which check the population of other species that might otherwise beco ...

Symbiotic Relationships

"Symbiotic relationships are the relationships organisms in a community have with one another. Types of symbiotic relationships includes mutualism, parasitism, predation and commensalism. In mutuali ...

Food Web

"A food web is a diagram that shows all the pathways of energy flow in a community. The food web is similar to a food chain in that it depicts organisms which eat each other. However, a food web is m ...

Food Chain

"A food chain is a diagram which depicts the series of organisms which eat each other, starting with a producer (generally a plant) and ending with the apex species. It is useful to think of food chai ...

Ecological Pyramids

"Ecological pyramids are diagrams which show the abundance of organisms at each trophic level along the food chain of an ecosystem. The shapes of ecological pyramids are somewhat triangular in ...

Predation

"Predation is the consumption of one organism by another. Predation occurs when one organism benefits from killing another. Herbivores, parasites, and parasitoids can also be considered predators." Fu ...

Carbon Cycle

"The carbon cycle is a cycle where carbon is exchanged throughout the Earth’s atmosphere, the terrestrial biosphere, the oceans and sediments.  Carbon in living organisms turns to soil when they ...

Biology Competition

"In biology, competition is an interaction between multiple organisms within a community that all depend on the same limited resource. One species generally adapts to better access that resource ...

Biology Community

"In biology, a community is a group of potentially interacting species living in the same place. Members of a community may have a variety of relationships including predator/prey, competitors, or ...

Nitrogen Cycle

"The nitrogen cycle follows the movement of nitrogen in its different forms. Nitrogenous gas makes up 80% of the atmosphere and most nitrogen enters into the ecosystem via nitrogen-fixing bacteria, bu ...

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