Interdependencies between species

Amensalism

________ (0/-) is an interaction where one organism experiences some negative effects while the other organism is unaffected.

Mutualism

________ (+ /+) is an interaction where both organisms benefit.

Commensalism

________ (+ /0) is an interaction where one organism benefits and the other is not seriously harmed.

Predation

________ (+-)/Is an interaction where one organism hunts and kills the other organism for food.

Symbiosis

________ is the interaction of two species living in close proximity to each other.

Competitors

________(-/-) Is an interaction between two organisms of either the same or different species competing for food.

Parasitism

________ (+/-)is an interaction where one organism obtains nutrients at the expense of another organism.

carrying capacity

is the limit of individuals an environment can support and sustain indefinitely.

Interactions

________ between species are called by many species sharing habitats and ________ with each other.

Ecosystem engineers

________ are organisms that significantly alter, create, or maintain the structure of an environment.

Apex predators

________ have no natural predators and are at the top of its food chain.

Keystone species

________ are species within any given ecosystem that play a disproportionally large role in maintaining the structure of the ecosystem, they tend to have a large effect on the ecosystem when removed.

Population density

________ of a species refers to the number of individuals found in a specific area such as individuals per square kilometre.