China's main source of energy is
A. hydro power
B. gas
C. petroleum
D. coal
D. coal
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In the atmosphere, pressure decreases most rapidly in the:
A) upper part of the atmosphere. B) middle part of the atmosphere. C) lower part of the atmosphere. D) It doesn't matter where you are, the pressure decreases with altitude is the same.
In the period between 1970 and 2017, 28 of the 40 worst disasters occurred in a belt running from Bangladesh through India and Iran to Turkey.
Answer the following statement true (T) or false (F)
Where does CO2 bind to hemoglobin?
A) only at the C-termini of the a-chains B) at the C-termini of both the a-chains and the b-chains C) only at the N-termini of the a-chains D) at the N-termini of both the a-chains and the b-chains
________ describes how an entire suite of silicate minerals can form from a single basaltic magma as it cools and crystallizes
A) The theory of plate tectonics B) Moh's hardness scale C) Bowen's reaction series D) The geologic rock cycle