David wants to categorize animals according to the sound waves they can hear. Eventually, he was able to categorize them in three different groups, group A, group B, and group C. He placed the animals that can only hear ifrasound in group A. Then he placed the animals that are only able to hear the same frequency of sound waves as humans do in group B. The last group of animals were able to hear only ultrasound. He placed them in group C. Which group would be able to hear higher frequency, group B or group C?
Ans: group C

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. Would sample A rocks have more or less chemical reactions?
Ans: more

Toronto is home to one of the leading manufacturers of aerosol sprays in the country. Because of this, homes in Toronto often spray high levels of aerosol on a regular basis. In Saskatchewan, meanwhile, the local government enacted a ban on aerosol sprays several years ago, so their level of aerosol use is now essentially zero. Which city, Toronto or Saskatchewan, will be allowing higher levels of UV radiation to reach Earth?
Ans: Toronto

There is a local election in Troy's city and he is researching the two candidates running for mayor. Troy is a strong environmentalist who believes, above all else, that taking care of the Earth is the number one priority in anything. In his research he decides to read the environmental proposals of each candidate. Mark Hampton, one candidate, has a proposal that he says will strongly boost the city's economy by opening more industrial factories, but these will increase the carbon dioxide put into the atmosphere. Jeffrey Lindell, the other candidate, says that he wants to begin implementing solar panel farms to generate electricity to cut down on the carbon emissions the city produces. Which candidate's proposal will cause an increase in global temperature?
Ans: Mark Hampton