Biology, 24.11.2020 01:30, jojonotsiwatho

Drew is showing his friends a device that he claims is able to trap 90 percent of the pollutants in automobile exhaust. To build the device. Drew
outfitted a vacuum cleaner with a specially designed air filter,
• modified the vacuum cleaner to allow it to receive electricity from a gasoline-powered engine, and
. attached a rubber fitting and adjustable clamp to the end of the vacuum hose.
Which of Drew's modifications to the vacuum cleaner could potentially reduce the effectiveness of his device?
A outfitting it with a specially designed air filter
•B
allowing it to receive electricity from gasoline-powered engines
- с
attaching a rubber fitting and adjustable clamp to the hose
D
all of these

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Drew is showing his friends a device that he claims is able to trap 90 percent of the pollutants in...