Which of the following compounds contains ionic bonds?
A. OF2
B. K2O
C. CH4
D. Cl2
E. none of the above
Answer: B
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Evolution by _____________ occurs when the genetic makeup of a population changes over time as individuals that survive changes in environmental conditions pass that genetic advantage onto their children. Hint : two words
Fill in the blank(s) with the appropriate word(s).
An El Niño event would be expected to produce ____
a. dry conditions in Peru b. rains and floods in Australia c. dry conditions in Washington and Oregon d. rains and floods in Japan e. rains and floods in Mexico and California
Fast moving currents of air found near the top of the troposphere are called ________
Fill in the blank(s) with correct word
In accordance with the pressure gradient,
A. air is less tightly packed in high pressure zones and moves toward low pressure zones. B. air is more tightly packed in high pressure zones and moves toward low pressure zones. C. air is less tightly packed in high pressure zones and moves away from low pressure zones. D. air is more tightly packed in high pressure zones and moves away from low pressure zones.