Atoms of which two elements have a combined total of 23 protons? Boron, B, and carbon, C
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Sodium, Na, and magnesium, Mg
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Copper, Cu, and zinc, Zn
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None of these

The hardy-weinberg principle is that genetic frequencies in a population? will remain stable from generation to generation will always be changing will not be affected by environmental changes are always in a 3: 1 ratio

The gulf stream and north atlantic current modify the climate of northwestern europe by making the climatea) warmer and drierb) warmer and more humidc) cooler and drierd) cooler and more humid

How did global wind belts and calm regions affect transportation in the past? !