Problem: John was studying about the history of Sahara desert. He was amazed to find that ten thousand years ago there were plenty of rainfall in that region. He labeled that era as era A. Then he found that rainfall deceased in the region about eight thousand years ago. He labeled that era as era B. He was wondering how that change in rainfall might have helped emerge the Egyptian civilization. Which era would see lower rate of weathering, era A or era B?

A: era B

Problem: Sweden and Norway had taken two different approaches in dealing with their electric power suppliers. Sweden has broken up large companies into many smaller companies. But Norway kept the handful of large electric power suppliers they had intact, and didn't take initiative to increase their numbers. Which country would see improvement in efficiency in electric power market?

A: Sweden

Problem: Bobby and Ned are two neighbors who both have medium sized gardens in their backyards. They regularly talk to each other about what they are growing and share gardening tips. Bobby is out working in his garden when Ned comes over to chat. Ned mentions that the garden at his house is currently flooded, but he's not sure why since it didn't rain. He asks him if Bobby's garden experienced the same thing. Bobby replies that his garden is not currently flooded. He does mention that he did see Ned's daughter walking around near Ned's garden carrying a hose turned on to full power. Whose garden is losing oxygen more slowly?

A: Bobby's garden

Problem: Two brothers went to take a blood test. Ned had sickle cell anemia, while Ted didn't have that disease. Their mother took Ned to a specialist. Which brother had sickle shaped blood cells?

A:
Ned