Problem: Two groups of microbiology students studied about the fermentation process. Group A studied about alcoholic and acetic fermentation, while group B studied about lactic fermentation. Which group learned less about proteins in milk thickening?

A: Group A

Problem: Two city situated on the shores of a large ocean polluted it in different ways. Truck city had an economy that was based on tourism, while Farm city was based on agriculture. Which city caused more beach litter?

A: Truck

Problem: Greg is an avid skier. He competes in many skiing competitions. He won several medals in those competitions. This November he will compete in two competitions - competition A, which is ski cross and competition B, which is an alpine skiing competition. Greg's fellow skier Bob is also competing in the same competitions. They both are exited about it. In which competition they will see multiple skiers racing down the course, competition A or competition B?

A: competition A

Problem: A group of researches studied the green house gas emissions and their effects on Earth and people during the eighties compared to the twenties. The eighties produced way more green house gasses than the twenties did. Which decade contributed more to a further increase of atmospheric temperature?

A:
eighties