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Environmental Science

Mrs.Sutton: Alexandra Rodriguez
Across
a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding
The variety of all life forms on earth - the different plants, animals and micro-organisms
A species whose abundance in a given area is believed to indicate certain environmental or ecological conditions or suitable conditions for a group of other species
collection of mechanisms, behaviors and physiological processes that prevent the members of two different species that cross or mate from producing offspring, or which ensure that any offspring that may be produced are sterile
can be either endemic (found only within a particular region) or indigenous (found both within the region and elsewhere).
population of animals, plants, or other organisms that are separated from exchanging genetic material with other organisms of the same species
Down
the formation of new and distinct species in the course of evolution.
a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically
Human intervention in animal or plant reproduction or survival to allow only individuals with desirable traits to reproduce
The breeding of plants and animals to produce desirable traits
a current functional role in the life history of an organism that is maintained and evolved by means of natural selection
a large naturally occurring community of flora and fauna occupying a major habitat, e.g., forest or tundra