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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 ...

The Water Cycle

"The water cycle tracks the movement of water as it progresses through the states of matter and travels through the biosphere. Most of the water on earth is found in its oceans, but when the surfac ...

Terrestrial Biomes

"A biome is a type of ecosystem with similar life forms and environmental conditions. Terrestrial biomes can be affected by factors like plant types and spacing, rainfall and humidity, soil type, lati ...

Habitat Destruction

"Habitat destruction is when a natural habitat is altered or destroyed so that it can no longer support the species that lives there. A habitat is commonly defined as the environment where a particula ...

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 ...

Sustainable Development

"Sustainable development is the usage of natural resources for human needs in a way that preserves the environment that produces those resources so they can be used in the future. Scientists argue tha ...

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 ...

Endangered Species

"Endangered species are defined as a species that is in immediate danger of going extinct. Species become endangered through a number of factors including disease, human activities and competition wit ...

Ecology Overview

"Ecology is the study of the interactions between organisms and the environment. There are various scales of study in ecology, the largest being at the level of the ecosystem, the next being at the le ...

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