Problem: Alex and Bob both took their cars to a mechanic because they were having engine troubles. The mechanic decided that both need the water in their radiator replaced. The mechanic added a large amount of antifreeze to the water he put into Alex's radiator. Because he wanted to save money, the mechanic only added a small amount of antifreeze to the water he placed into Bob's radiator. Which person's radiator, Alex's or Bob's, would have water with a higher boiling point?

A: Alex's

Problem: A team of archaeologists studied two human settlements, village Alpha from about 11000 years ago and village Beta, which existed 9000 years ago. Village Beta was bigger, because their inhabitants already knew about and practiced agriculture. Which village didn't have the birth rates go up as a result of agriculture?

A: Alpha

Problem: The specialists studied two groups of larvae. Group L displayed all kinds of mutations while group D didn't. Which group of larvae had fewer hereditary diseases?

A: group D

Problem: The southern province was exposed to intensive grazing for many years , and now soil quality is poor and dust storms are present. The northern province has more fertile soil, more trees. Which province experiences more dust storms?

A:
southern