The answer is the urals and the caucasus mountains
I believe the answer is D. The NASA mission which sent a probe to collide with a comet's nucleus is the Deep Impact. It is the first mission sent in order to see the interior of a comet. The comet that was aimed was called the Comet Tempel 1.
Just learned this the 5 stages are
fixation or volatilization, mineralization, nitrification, immobilization, and denitrification.
Hope this helps
B. eastern orthodox church is the predominant one