Which process uses cyanide to extract gold?

This process is called Gold cyanidation, this process is also known as cyanide process, and the MacArthur-Forrest process. This process is a hydrometallurgical technique for extracting gold from low grade ore in the way that it converts the gold to a water-soluble coordination complex. This the most commonly used leaching process for extraction of gold.

No because the eaeht is on a 23.5 degree axis tilt and so when it is winter the northern hemisphere is pointing away from the sun and the soutubern hemisphere is pointing toward the sun