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
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
A sanitary landfill is so named because wastes are treated each day to decontaminate them.
Answer the following statement true (T) or false (F)