The portion of the atmosphere containing the air we breathe is called the
A. troposphere.
B. stratosphere.
C. biosphere.
D. hydrosphere.
E. ecosphere.
Answer: A
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Which numbered site is likely to have a thin sequence of sediments over crystalline rocks of the basement?
A. 1, the continental shield B. 2, the continental platform C. 3, a basin in the continent D. 4, a continental shelf E. 5, a deep sediment-filled basin next to the continent
Ocean current are affected by global warming because saltier water is _______ and global warming is making tropical waters ___________ salty
Fill in the blank(s) with the appropriate word(s).
The small number of livestock and grains that humans depend on for food places us in an advantageous position to withstand the effects of environmental degradation.
Answer the following statement true (T) or false (F)
Andalusite, kyanite, and sillimanite are described as polymorphs. What does this mean?
A) They have the same atomic structure but different chemical compositions. B) They have the same chemical composition but different atomic structures. C) They all morphed at the same time. D) They are exact opposites of one another.