It is difficult to obtain a direct absolute age date for most sedimentary rocks. Indicate whether the statement is true or false
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The strong Siberian high becomes well developed in the summer
Indicate whether the statement is true or false
If an electrical tea kettle requires 1500 watts to heat, how many kilowatts does this equal?
A) 1.5 × 103 kw B) 1.5 kw C) 1,500,000 kw D) 15,000 kw E) cannot be determined from the data provided
The beginning of the Phanerozoic is marked by the ________
A) abundant life forms compared to earlier times B) formation of large land masses C) evolution of land plants and animals D) development of hard body parts, such as shells and bones E) existence of a modern atmosphere
Continental crust that makes up mountains extends farther down into the mantle than oceanic crust because
A. continental crust is heavier than oceanic crust. B. continental crust sinks into the mantle and asthenosphere. C. continental crust is thicker than oceanic crust. D. oceanic crust is buoyant and rides atop the mantle.