A scientific law is a brief statement illustrating a basic principle that has been repeatedly supported with observations and measurements
Indicate whether the statement is true or false
TRUE
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State briefly the known threats to kelp forests
What will be an ideal response?
Under some conditions, flying a helicopter just above a fog deck can help to disperse the fog
Indicate whether the statement is true or false
In terms of dating of specific rocks, structures, or landscapes, numerical age refers to
A) the age of geological features based on isotopic dating techniques. B) the approximate age of geological features based on the period or epoch in which they occurred. For instance, noting a feature is from the Cretaceous. C) a range of numeric values in which a features was likely formed and based on several lines of evidence, such as paleoclimatic and paleobotanical reconstructions. D) the age of one feature with respect to another within a sequence of events and deduced from the positions of rock strata above and below one another.
Which statement is true about continental crust?
A. It is composed of granitic-type rock and has the same density as oceanic crust. B. It is composed of basaltic-type rock and has a lower density than oceanic crust. C. It is composed of basaltic-type rock and has a higher density than oceanic crust. D. It is composed of granitic-type rock and has a lower density than oceanic crust. E. It is composed of granitic-type rock and has a higher density than oceanic crust.