1) Wrestling.
Explanation: Wrestling has been around for millions of years, Wrestling is something that comes along almsot everyday. Kid's wrestle(play fight), adults do too. Which makes it common. Also wrestling has been around for over 15,000 years!
2) Running.
Explanation: Running is very common, we all run daily which makes running common. Also running has been around for millions of years. Even dinosaurs ran. So that being said, running is one of the oldest competitive sports.
Both of these are both very competitive. either to win money or take home a trophy.
Millions of people compete for a title. Which makes them competitive.
Answer:
the answer would be Amino Acids
Explanation:
Regular exercise can help to decrease depression.
Exercising is a great way to decrease depression, as it will increase a person's self-esteem, making them more confidence and happier.
It looks like there is not answer to this question.
Answer:
One factor that can increase sensitivity to sunlight is genetics. Explain why some people think that indirect sunlight will not cause skin damage.
When there are clouds or a window in between us and the sunlight, it's common to believe that all the ultraviolet radiation from the sun will be blocked.