Answer:
Piercing your ears with a needle that has been washed thoroughly with soap and water
A single cell is often a complete organism.
I am not really sure of this answer, but i think its 9. But i am not 100% sure. Take my answer wisely.
You will need cardiovascular endurance/fitness in order to play water polo because you will be in the water and constantly swimming therefore you will really need to work on cardiovascular endurance when playing water polo.
Hope that this helped you out hon :)
