Problem: Dan harvested lots of fruit and decided to candy some of them to preserve them. He left some fruit fresh for the family to enjoy. He candied apples, pears, plums, and quince. He didn't candy oranges, blueberries, apricots and peaches. Which fruit retained their quality longer, apples or apricots?

A: apples

Problem: Mike grew tomatoes on his parcel of land and so did John. Mike's attempt was very successful, because he adjusted the soil's pH to a viable level for growing vegetables, and John didn't. Both parcels had soils with lots of sodium carbonate in them. John's experiment failed. Which soil was less basic?

A: Mike's

Problem: Karen studied animals in school. She started studying predators for a school presentation. She liked it. Her friend Molly liked cows, sheep and other herbivores, so she decided to do a presentation about grazers, and their role in nature. Which girl learned less about animals that keep grass from growing out of control?

A: Karen

Problem: Two teams studied two types of animals: team A studied predators, while team B studied grazers. They learned a lot from this experience. Which team learned that if all of the wolves are removed from a population, then the population of deer or rabbits may increase?

A:
team A