A 2014 Reuters analysis found that, before 1971, water reached flood levels no more than five days every year (on average) in several U.S. east coast cities. Since 2001, however, that number has risen to 20 days or more (on average).
Explanation:
The following table summarizes the ground state electron configuration of the first 20 elements on the periodic table.
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ATOMIC STRUCTURE. 3.4 - Electron Configurations of Atoms.
Name Atomic Number Electron Configuration
Argon 18 1s2 2s22p63s23p6
Period 4
Potassium 19 1s2 2s22p63s23p64s1
Calcium 20 1s2 2s22p63s23p64s2
Answer: True
Explanation: Egypt is bordered by the red sea and the mediterranean sea
