Mike was reading about climate change. The author compared two different time periods, era A and era B. Era A was set in the present day. But era B was set in the year 2040. Mike was surprised to find how Arctic area would change in the coming years. In which time less fresh meltwater would enter the north Atlantic, era A or era B?
Ans: era A

Two villages had many inhabitants practicing horticulture. People from Valley village grew flowers and used arthropodes and other insects for pollination and crop protection. Granite village used arthropods and snails, they cultivated them for food. Which village used arthropods to reproduce flowering plants?
Ans: Valley

Space explorers, that launched from Earth, just encountered a new planet several light years away. This planet is almost an exact copy of Earth, but it is currently uninhabited by intelligent life. Upon landing, the explorers name the planet Caprica and begin learning as much as they can. They discover that the species on this Caprica are nearly all the same as on Earth, and even most of the topography looks the same. However, the main difference is that humans never evolved here. For this reason, there are no cities or cars or factories to burn up fossil fuels. Does Caprica need more or less photosynthesis than Earth?
Ans: less

Two sister cities were part of an air pollution study. While Prague had big air pollution problems, Belfast was eco-friendly and its inhabitants were healthy. Which city had fewer children affected by the pollution?
Ans: Belfast