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Exercise 6 - Towards academic reading
Read this paragraph and answer the question below.
Do Cellphones Alter Brain Activity?

Cellphones (mobile phones) expose us to low levels of radiofrequency energy (RF). Many people think that exposure to RF may cause cancer or other serious diseases. Over the past 15 years, scientists have conducted hundreds of studies that examine how cellphone use can alter activity in the human brain. While some researchers have reported significant biological changes associated with RF energy, other studies have failed to show a significant relationship between exposure to low levels of RF energy and health problems.
According to the above paragraph, which two answers below best complete the sentence?

Click on the 2 correct answers.

Some studies on the health risks of using cellphones...
phones

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