Problem: Benny and Jerry were two Irish twins. They went to the doctor for their yearly exam. Benny found out he could get cancer because of his lifestyle so he decided to make healthy lifestyle choices from then on. Jerry continued smoking, spending lots of time in the sun, and eating junk-food. Which brother lowered the risk of getting lung cancer by quitting smoking?

A: Benny

Problem: Bird city had may economic ties with Pine city. Pine city was located in the mountains, and was inhabited by nature lovers and people that protected the environment. Bird city was situated on the banks of a large river flowing into the sea. They relied mostly on conventional agriculture and used fertilizer for their crops. Which city released less livestock waste into the ocean?

A: Pine

Problem: Ken is a microbiologist. He got two samples of yeasts, yeast A and yeast B, from two different businesses. Yeast A is used in a bakery, and yeast B is used in a brewery. He has to decide the characteristics of each yeast sample for further study. Interestingly, despite all his curiosity, Ken doesn't like any yeast to be around him. Which yeast sample would be used as a leavening agent, yeast A or yeast B?

A: yeast A

Problem: When Emily was 4 years old she came down with a case of the chicken pox. She is now 14 and her younger brother Victor has now caught the chicken pox from another child at school. Emily opts to stay home and take care of him. Given a person has never had the chicken pox or developed an immunity, will their chances of catching the checken pox from someone who has it increase or decrease?

A:
increase