Answer:
Option A. Air pollution can cause water pollution.
Explanation:
Substances can permeate into the water from the air.
The correct answer is that Matt will be more prone to infections.
Answer:
a. double-blind experiment
Explanation:
A double-blind study <em>is done when the participants and experimenters do not know who is receiving which treatment in order to prevent bias.</em> We can conclude this is the correct answer because the results are being shared anonymously.
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