Summer temperatures are high in arid climates because
A. evening cloud cover prevents the loss of heat.
B. high sun angle and low relative humidity.
C. most desert locations are closer to the sun in the summer.
D. high sun angle and high relative humidity.
Answer: B
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____________________ are harmful chemicals emitted directly into the air from natural processes and human activities
Fill in the blanks with correct word
The element uranium (U, atomic no. = 92) often has 146 (or more) neutrons, but it will still undergo radioactive decay. Which statement might best describe why?
A. The force is strong with U, but tainted with the dark side it is. B. The attractive force of the nucleons has a limited range. C. The isolated neutron is not stable and will undergo spontaneous transformation into a proton and an electron. D. both A and B E. none of the above
Ground water
A) moves short distances through shallow soil horizons and reemerges to join surface runoff in streams. B) trickles along surfaces of mainly granite rocks. C) percolates through lava rock to reach the soil below. D) percolates deep below the surface through open spaces and fractures.
A rock can be composed of almost entirely one mineral
Indicate whether this statement is true or false.