Env Sc- Ch 4 Vocab

1. Species found in only one area; are especially vulnerable to extinction

• pandemic species

• endemic species

• indicator species

1. one species evolves into two or more different species; most commonly occurs in sexually reproducing species when distant migration or a physical barrier separates two or more populations of a given species; as a result, genes are no longer exchanged between members of the two groups

• native species

• plural moose

• speciation

1. adaptive trait—any heritable trait that gives an individual some advantage over other individuals in a given population

• adaptation

• allele

• habitat

1. refers to variety in the genetic makeup of individuals in a population; primarily results from mutations

• genetic variability

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• adaptation

Through this process, individuals with certain genetic traits are more likely to survive and reproduce under a specific set of environmental conditions. These individuals then pass these traits on to their offspring.

• natural selection

• artificial selection

• all selection

a species genetic change over time

• evolved

• indicator species

• biological evolution

this species is sensitive to environmental changes and are affected almost immediately by damage to their ecosystems; they can provide an early warning that environmental conditions are deteriorating

• evolved

• indicator species

• keystone species

an organism that plays a unique role in the way an ecosystem functions; without this species, the ecosystem would be dramatically different or cease to exist; an example - mountain lions and wolves help control the distribution and population of prey animals such as deer and rabbits by influencing where these species feed and raise their young

• keystone species

• native species

• functional species

a species that is introduced to an ecosystem in which they have not live there previously

• endemic species

• nonnative species

• native species

• functional species

species that naturally originated in a given ecosystem and have become suited to the environmental conditions

• native species

• specialist species

• my favorite species

• nonnative species