Q: Carson is a construction worker that operates a jack hammer on the construction site for a new building. The jack hammer is often incredibly loud and generates a high amount of noise. Carson wants to protect himself from this noise, but he also needs to be able to hear the orders given to him by his boss on the site. Would electronic ear protectors reduce or increase the amplitude of the jackhammer?
A: reduce

Q: Russian research spent most of their time in Antarctica to study the loss of ozone in the atmosphere. The Canadian team went north of the Polar Circle, close to the North Pole to do the same thing. They spent several months there. The Canadian team didn't find any ozone holes at the North Pole. Which team didn't observe the disruption of the nitrogen cycle?
A: Canadian

Q: two groups of students studied animal reproduction. Group Alpha studied sexual reproduction, while group Beta studies asexual reproduction. Which group of students learned more about increased genetic variation within a species?
A: Alpha

Q: Mark and Jordan want to take a trip together. Mark wants to go mountain climbing while Jordan wants to go to a concert out of state. Jordan sometimes has a hard time breathing as well so they take this into consideration while making the plans for their trip. Will there be more oxygen in the air at the top of the mountain or at the concert?
A:
concert