Why are some people left-handed?

VOCABULARIES

1. Evidence -(n)-the available body of facts or information indicating whether a belief or proposition is true or valid.
2. Hedonic treadmill- also known as hedonic adaptation, is the observed tendency of humans to quickly return to a relatively stable level of happiness despite major positive or negative events or life changes.
3. adversity-(n) difficulties; misfortune.

QUESTIONS

1. Explain why some people are left-handed.
2. Mention the advantage of a left handed person.
3. How many percent of top golf players are lefties?
4. Mention some pros and cons of being a lefty person.
5.Are you a left-handed person?Before this lesson, what was your personal opinion on why some people are left-handed?