If an environment is changed by disruption, a different climax community always establishes
a. True
b. False
True
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Which is NOT one of the geographic clusters of poverty in North America?
A) Appalachia B) the Deep South C) urban California D) agricultural California E) Canadian Maritimes
A sanitary landfill is so named because wastes are treated each day to decontaminate them.
Answer the following statement true (T) or false (F)
Electrons are made to flow in a wire when there is
A) an imbalance of charges in the wire. B) more potential energy at one end of the wire than the other. C) a potential difference across its ends.
Changes in habitat have tremendous effects on the organisms that depend on them. These effects are ________
A) generally negative; organisms are already adapted to the habitats in which they occur and any change is likely to render the habitat less suitable B) generally negative; the changes usually cause rapid extinction of most species C) generally positive; the changes increase the habitat that is available for species to colonize D) generally neutral; the variations within each species allow them to adapt very quickly E) generally positive; organisms are already adapted to the habitats in which they occur and any change is likely to render the habitat more suitable