astronomy One Nineteenth Century observation which convinced many of the existen

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astronomy

One Nineteenth Century observation which convinced many of the existence of at least plant life on Man was the behavior of the polar caps and dark areas. What was this behavior? An attempted invasion during the 1930's which was broadcast on the radio. The northern polar cap grows during the northern winter while the dork areas in the northern hemisphere begin to radiate x-ray and radio waves. The polar caps are connected to the dark areas by a network of canal v The dark areas in the northern hemisphere grow during the northern summer as the northern polar cap recedes.

Explanation / Answer

D) is the answeer.

The planet Mars has two permanent polar ice caps. During a pole's winter, it lies in continuous darkness, chilling the surface

https://en.wikipedia.org/wiki/Martian_polar_ice_caps

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