Answer:
they are not affected by earth atmosphere
The correct answer is letter (<span>C) The polar air mass moves south to replace the rising maritime tropical air mass.</span> These air masses are bringing cold air to warmer areas most especially during the winter and cool. These air masses are stable and usually does not form much cloud. While the Continental Polar air move down south, across the warmer land, the lower part of the air mass is modified and thus few clouds are formed.
4 is B. It wasn't in the genes to get short wings.
5 is C. It should be natural selection but adaptation is another way to say ns.
