Problem: Two groups of tourists went on two different cruise ships Group J had some members contract Norovirus and hepatitis A, while group K got many cases of giardia and trichinella infections. Which group had fewer people with roundworm parasites?

A: Group J

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 less pollutants?

A: Los Angeles

Problem: The city of Reslie is known for its grilled cheese sandwiches. People come from all over the world to taste their sandwiches. The mayor of Reslie, while having a meeting about how to spend the excess funds from tourism this year, was told that the city is experiencing soil piping. The neighboring city, Tichago, consumes many of Reslie's grilled cheese sandwiches. The mayor of Tichago has just received a phone call from the mayor of Reslie asking if Tichago is also having soil piping. Tichago's mayor replies that no, they are not. Which city will need to inspect their dams less often?

A: Tichago

Problem: Scientists studied two groups of plants. Group F had plants with flowers, group W had plants that fertilize over wind- spread pollen. Flowering plants were more efficient. Which group of plants gave pollinators nectar?

A:
Group F