What is business risk, and how can it be measured? What are some determinants of business risk?

Business risk,

What is business risk, and how can it be measured?
What are some determinants of business risk?
Why does business risk vary from industry to industry?
What is operating leverage?
How does operating leverage affect business risk?
What is financial risk, and how does it arise?
Explain this statement: “Using leverage has both good and bad
effects.