Hyperinflation has a serious impact on the economy.

His actions exerted a great influence on our plans.

His opinion had a big influence on my decision.

That news greatly influenced his opinion.

This problem is very serious.

Do you understand the seriousness of this problem?

He is an expert in economics.

His words had a great influence.

The environmental issues are becoming more serious.

Environmental issues are becoming more serious day by day.