Q: Mike lives in a cold mid-western city, where there is not much predator prey interaction. Mike noticed that in his city some squirrels have darker coat, while others have lighter coat. He also knew that darker coats are more suitable in cold environment with less predator prey interaction. He started thinking why the squirrels developed different coat colors. Given the paragraph above, please answer correctly the following question: Which squirrels would have smaller chance of survival, lighter or darker?
A: lighter

Q: In the beginning of year 1000 mount Etna had a huge volcanic eruption. To test the effect of volcanic eruption on sea level scientists measured geological data through carbon dating. They measured the data for four different time point - for year 998, year 1000, year 1002, and year 1010. Scientists now need to compare and analyze these data. Given the paragraph above, please answer correctly the following question: Without considering Grinsted's theory, which year would have higher sea level, year 998 or year 1010?
A: year 998

Q: Scientists studied water stratification in two saltwater lakes. they were trying to find out why the fish population decreased in Long lake, and was very healthy and abundant in Shoal lake. They found out the phenomenon occurred more often in Long lake, leading to very many unpleasant chain effects. Given the paragraph above, please answer correctly the following question: Which lake had less denser layers of water?
A: Shoal lake

Q: Two groups of teens studied fire for the physics class. Group S made a fire using large logs, while group F made a fire using small twigs and sawdust. Both groups used the same volume of wood. Given the paragraph above, please answer correctly the following question: Which group made a fire from fewer particles of wood?
A:
Group S