The cause of magnetic reversals is a change in the structure of the Earth's inner core. Indicate whether the statement is true or false
F
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How many categories are in the hurricane intensity scale?
A. 6 B. 4 C. 5
Characteristics of passive continental margins include which of the following?
A) Broad continental shelves B) Chains of islands C) Deep-sea trenches D) Thin sediment accumulation E) Volcanic and earthquake activity
The gas(es) that has/have the greatest relative contribution to increasing the greenhouse effect is/are ________
A) carbon dioxide (CO2) B) chlorofluorocarbons (CFCs) C) methane (CH4) D) nitrous oxide (N2O) E) ozone (O3)
Advocates of the Precautionary Principle as it applies to biosafety of GM organisms feel that
A) no nation has the right to deny the importation of products. B) if there is the possibility of negative consequences, selling GM crop products should not be encouraged. C) testing the safety of bioengineered organisms is not realistic. D) science should not be allowed to be used to direct government policy.