How many dollar bills are in circulation? There are approximately 11.7 billion one dollar bills in circulation in the US, with 8.9 billion 20 dollar bills and 11.5 billion 100 dollar bills. There are about 39.8 billion notes in circulation all together. For coins, there are about 28 billion in general circulation. What are some unusual notes in circulation?
Planet Earth has an abundance of water that makes it unique and perfect for life to exist. Planet Earth has an abundance of water that makes it unique and perfect for life to exist.
The Earth is made of three layers that are just like an onion â the crust, the mantle and the core. Some of these layers have even more layers in them and are always moving. The Earth is mostly made of rock and metal. As scientists can't really get right to the middle of the earth, it's not easy for them to know what's way down in the middle.