Plz answer fast I will mark u as brainlest

Why are slanted roofs found on many buildings within russia and finland? a. to prevent ice slides. b. to prevent the build-up of water during heavy rains. c. to prevent heat from escaping during the clod winter months. d. to prevent snow build-up.

Which were the most important issues during the presidential election of 2008? a. economic downturn and environmental protection b. two overseas wars and economic downturn c. two overseas wars and campaign spending d. environmental protection and campaign spending

In federalism, the power to govern is