Problem: A team of scientists studied two groups of mice. Group C was exposed to carcinogens, while group N was not. Which group of mice had fewer abnormal cells divide uncontrollably?

A: group N

Problem: David collects cigarette packs of different years. He found that two of his packs, pack A and pack B, are very different. Pack A is from before September 2012, and pack B is from after September 2012. He started searching on the internet to find out why the packs were different. Would pack A induce less or more awareness of smoking health risks than pack B?

A: less

Problem: Two villages are inhabited by lots of people that ride bicycles. Hill village is located on a mountain and gets lots of rain, and Low village is situated in a valley, and has more sunny days. Which village has more cyclists going downhill?

A: Hill

Problem: In sub-Saharan Africa there are two predominant groups of antelope present. The first group of antelope, group A, have long necks and strong teeth. The second group of antelope, group B, have shorter necks and weaker teeth. Because of their longer necks and stronger teeth, the antelope from group A are more easily able to pick fruit and leaves from the tall trees in the region compared to antelope from group B. Which group of antelope is more adapted to the environment?

A:
group A