Some things that happen once every four years include: - Leap Years - US Elections - The Olympics
Letter " m " ^_^ - > christian
More like every 28 years, I think.
You have the world cup, the U.S president is elected, the Olympics are held , and so is the Euro cup. This all happens every four years.
The letter "Y."
Once every century?
vicennial: happening once every 20 years
Yes, it snows in the Savannah. However, this is an extremely rare occurrence only happening an average of once every 2-3 years.
Biennial is once every two years. Biannual is twice every year.
Every four years.
Every ten years=once a decade
Some things that happen once every four years include: - Leap Years - US Elections - The Olympics
Only once or twice in your life time, its not so, you need a booster shot once every 10 years superfuga
The letter 'M'.
Biannual describes something that occurs twice a year, once every half year.
Once a year or Once every two years
4 years 4 yearsThe Summer Olympics are held once every 4 years.