If the viking missions were such a rich source of information about mars, why have we sent the pathfinder, global surveyor, and other more recent spacecraft to mars? make a list of questions about mars that still puzzle astronomers.

Honestly "global warming" may be a slight possiblity, however they called it "climate change" because its not real, in fact we had one of our coldest days here not too long ago, and the "issues" with this subject is a blindfold for actual problems.

I'll do it rn and then answer

Ibelieve the answer is arteries