What is the term used for the earth to be closest to the sun

Perihelion

Explanation:

Aphelion is the point of the Earth's orbit that is farthest away from the Sun. Perihelion is the point of the Earth's orbit that is nearest to the Sun.

I hope this is what you were looking for. If not then very sorry. I'm just going off of my prior knowledge.

no because they are located in tropical climates

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