John and Keith are neighbors. They have been pondering about how to communicate with each other in a doomsday scenario when all the electronic devices would be useless. They connected their houses with three ducts. One of the ducts is filled with air; they called it channel A. Another duct is filled with water; they called it channel B. And the last duct is filled with iron; they called it channel C. They can now transmit sound with these channels of communication; in case, disaster strikes. How much faster would be channel C than channel B in m/s, 3640 m/s or 3600 m/s?
Ans: 3640 m/s

John was studying the history of dinosaurs. He found that dinosaurs were flourishing before 66 million years ago. He labeled it as era A. Then he found that there was a mass extinction around 66 million years ago. He labeled that time period as era B. John found it interesting that many species have evolved in the course of history. Which era would more likely be shorter, era A or era B?
Ans: era B

Two climate experts studied different continent to observe climate changes. Jordan studied Australia, while Jeb studied Antarctica. Which person didn't observe warming in winter?
Ans: Jordan

The Jones family had a history of chronic viral infections. Jenny got human papillomavirus, while her brother Josh got infected with the EpsteinBarr virus. They were both under treatment. Which sibling had a higher risk of developing skin cancer?
Ans: Jenny