Problem: Paul started a healthy lifestyle because he wanted to avoid getting cancer. His cousin Pete laughed at him, and continued eating fast-foods, smoking and disregarding his health completely. Which cousin stopped using tanning beds?

A: Paul

Problem: Two cities located at the sea shore between sand dunes, took 2 different approaches to their economic stability and sources of income for their inhabitants. Dune city was mainly focused on raising animals fishing and tourism, while Gulf city started sand mining operations because of the good prices they received per cubic yard of sand. Which city made less money from sand mining?

A: Dune

Problem: Margaret is a mother currently in the middle adulthood stage of her life. Margaret's daughter, Vanessa, hasn't reached middle adulthood yet, and is still a teenager. Both of them enjoy reading beauty and fashion magazines so they can find age-appropriate tips on how to improve their look. Who is more likely to begin developing wrinkles?

A: Margaret

Problem: Los Angeles receives a steady year-long supply of high amounts of sunlight and wind. Because of this, Los Angeles is able to power many of its buildings and factories using renewable resources. Las Vegas, however, receives barely any sunlight or wind throughout the entire year. As a result, they use little renewable resources and instead power most of the city through non-renewable resources like fossil fuels. Which city, Los Angeles or Las Vegas, emits more greenhouse gases?

A:
Las Vegas