to raise; to increase

Sleep deprivation increases risk of heart attacks.

Use interrogative pronouns to rewrite the sentences below; if you need to, you can add or remove a few words.

As time went on, rules were added to the game to make it safer.

This year, Edinburgh began work on its fifteen-year regeneration project to transform its waterfront and provide its growing population with a new kind of living area.

There was a steady increase in population.