Advanced Placement (AP), 10.03.2021 03:50, niquermonroeee
A student is concerned with the amount of air pollution students are exposed to in the school’s parking lot after school. The student conducts an investigation to compare the quantity of particulate matter released from the diesel-powered buses, natural gas-powered buses, and the large and small cars as they idle waiting to pick up students. To make measurements, a small piece of white fabric is used to collect particulate matter from the tailpipe of each vehicle as it idles for five minutes. Each piece of fabric is then analyzed to measure the amount of particulate matter it collected.
(e) Identify the dependent variable in the investigation. (1 point)
(f) Identify the hypothesis of the investigation. (1 point)
(g) Describe a possible control group for this investigation. (3 points)
Answers: 2
Advanced Placement (AP), 23.06.2019 23:30, abbygreen
All of the following physical reactions occur when our fight-or-flight response is triggered except a. dilating pupilsb. increasing heartbeatc. increasing digestiond. increasing perspiration select the best answer from the choices providedabcd
Answers: 2
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