Article - the

Complete the sentences below using the words in brackets. Decide whether or not to use the, or whether to use the plural.

Many scientists are concerned about and its impact on future generations. (environment)
The report discusses of social media on young people's mental health. (effects)
Tourism is very important to because it brings foreign currency. (Egypt)
The study shows that of crimes in the city has decreased significantly. (number)
My presentation will focus on between traditional and modern teaching methods. (differences)
The new policy aims to improve of public transportation in rural areas. (availability)
Many international companies have moved their headquarters to . (Switzerland)
The research indicates that technology is advancing rapidly. (medical)