Wisdom without the Crowd!

What percentage of the Earth's surface is covered by water?

• 61%

• 71%

• 81%

• 91%

Approximately what percentage of human DNA is identical to a banana's?

• 25%

• 35%

• 50%

• 60%

What percentage of the human brain is water?

• 60%

• 70%

• 80%

• 90%

What percentage of the world's population lives in the Northern Hemisphere?

• 50%

• 60%

• 70%

• 90%

What percentage of the human body is made up of blood?

• 4-5%

• 6-7%

• 8-9%

• 10-11%

What percentage of the world's population has never made a phone call?

• 10%

• 15%

• 20%

• 25%

What percentage of the world's oxygen is produced by the Amazon rainforest?

• 10%

• 20%

• 30%

• 40%

What percentage of the Earth's history has humans existed?

• 0.01%

• 0.1%

• 1%

• 10%

In a classic game of rock-paper-scissors, what percentage of the time does "rock" actually win?

• 25%

• 33.3%

• 50%

• 66.6%

What percentage of the human genome is shared with chimpanzees?

• 88%

• 94%

• 98%

• 99.6%