The ecologist moved from Aspen, where there was no air pollution, to Seattle which experienced a lot of air pollution. He started studying the weather there as well. Which city had rain with a higher pH?
Ans: Aspen

Catherine is throwing her friend a birthday party and is starting to put up decorations. She has finished hanging streamers and now she has to fill the balloons. Having never used a helium tank before, she wants to test how much to fill each balloon. If it only took two seconds to fill a balloon at first, but now it takes three seconds has the tank pressure increased or decreased?
Ans: decreased

Two groups f people presented allergy symptoms. Group Alpha inhaled some allergens, but they were in a very protected environment, while Group Beta ingested some allergens and was exposed to a wide variety of other allergens. Which group had some people that were exposed to pollen?
Ans: Group Beta

Two botanists studied different types of plants. Barb studied anemophilous plants, while her friend Faye learned about entomophilous plants. Which botanist learned less about well-exposed stamens?
Ans: Faye