Q: Two identical planets, Norlon and Bothar, have been discovered in a neighboring galaxy of ours. These two planets have the same type of atmosphere as Earth and are extremely similar to Earth in terms of topography and even species of animals that live on them. The main difference is that Norlon is inhabited by a species very similar to humans that emit a lot of carbon dioxide into the atmosphere. Bothar, however, has no such species on its planet. Does Norlon have a higher or lower average temperature than Bothar?
A: higher

Q: Bob was studying about Earth's atmosphere. He found that increased depletion of Earth's ozone layer is a relatively new phenomenon. Most scientists would blame the CFC gases for the depletion of ozone layer. In the early twentieth century ozone layer was relatively stable. Bob labeled that time as time A. But in the late twentieth century situation changed with seasonal depletion of ozone layer. He labeled that time as time B. Would time B see less or more phytoplankton than time A?
A: less

Q: Two boys read about the Earth, Evolutionism and the Gaia hypothesis. Brad liked Evolutionism more, while Stan preferred the Gaia theory, and agreed with it. Which boy disagreed that the Earth tends to achieve a stable state?
A: Brad

Q: Rob is learning about ionization. He looks at a specific group of elements from top to bottom to figure out thier ionization energy. Which element will have a higher shielding effect, the top element or the bottom element?
A:
bottom element