Problem: Pete lived in Alaska, but visited his friend Julia from Hawaii very often. They had many mutual interests, including geology and earthquakes. Which person lived closer to Oahu island?

A: Julia

Problem: Two sisters went to the hospital. The medics ran some blood tests and found out that Sue had sickle cell trait, while Mary had normal blood cells. Sue received treatment. Which sister has a genetic abnormality?

A: Sue

Problem: In 2016, the subtropical ridge across North America migrated far enough northward to begin monsoon conditions across the Desert Southwest from July to September, but in 2017 the atmosphere dried out across the Desert Southwest, causing a break in the monsoon regime. Therefore a wet year was followed buy a dry one, and the fires started again. Which month of the year was drier, July 2017 or June 2017?

A: June 2017

Problem: Jake and Todd used different farming methods to produce their crops. Jake always tills his land, while Todd uses he no-tillage method. Which farmer used more chemicals for pest control?

A:
Todd