Q: Two scientist, Pete and Gill, studied the Earth's crust and geology. Pete studied earthquakes, while Gill studied mantles and volcanos. Which person studied more about sediments lying on top of the subducting plate?
A: Gill

Q: Ricky, an entomologist, is observing an ant colony in his back yard. After some observation, he discovers that all the ants travel down one of two distinct paths in order to find food to bring back to the colony. After taking some measurements, Ricky sees that path A is approximately 100 meters in length, and path B is approximately 150 meters in length. Ricky is now trying to make some scientific conclusions based on these observations. Which path will have higher pheromone density?
A: path A

Q: 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?
A: era A

Q: Rob is an environmental scientist. He is looking at two samples of soil, sample A and sample B. Sample A is from Amazon Rain-forest, where they get one of the highest rainfall in the world. Sample B is from the Atacama Desert, where they get one of the lowest rainfall in the world. He needs to determine the properties of these samples. Which sample would show increased rate of weathering, sample A or sample B?
A:
sample A