Problem: John has to live in the tundra for six months. He is preparing for the harsh arctic winter. He bought three bags of foods, bag A, bag B, and bag C. He kept bag A on his table top. Just out of curiosity, he applied the sugaring method he learned from the internet on bag B and bag C foods. Afterwards, he kept the bag B foods in a place with no moisture, and the bag C foods in a place with high moisture. Would bag B foods more likely to get spoiled or less likely to get spoiled?

A: less likely to get spoiled

Problem: Two countries had big rivers discharging in the same ocean. Finland was very aware of environmental pollution and acted accordingly, while Russian practiced conventional agriculture and used fertilizers. Which country caused more hazardous particles to reach into the ocean?

A: Russia

Problem: Archaeologists studied data about human settlements. One was 100,000 years old called village R, and the other one was about 9,000 years old called village N. The older settlement was located in Africa, the other one wasn't. Which village had more people that were gatherers?

A: village R

Problem: Two villages experienced flooding this spring. Berg village used many sandbags to protect from the dam overflowing. Creek village didn't use any sandbags, they were caught by surprise. Which village experienced lower water levels?

A:
Berg