Based on the information given in the article, it can be denoted that the best place for the construction will be Spain.
From the information given, it was stated that the friend is interested in a cave construction in the mountains in a certain area of this country and that the place must be safe against hurricanes, energy-efficient, and modern.
The best option will be Spain. It has different mountain ranges such as Sierra Nevada, Pyrenees, etc. Also, it's modern and industrialized.
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You didn't specify, but a human should be awake no longer than 16 hours a day (if this is what you meant)
Answer: mercury and venus are (closer to) the sun than earth is. so their orbital periods are (shorter) than earths orbit. the further a planet is from the sun the (longer) it’s orbit is.
Explanation:
