How can the oceans be saltwater when the rivers that flow into them are...
The freshwater found in rivers originates from rainwater and melting snow/ice. As this water flows downriver towards the ocean (or sea), it picks up...
What happens to a turtle’s shell after it dies?
A turtle's shell will eventually decompose, but at a much slower rate than its flesh, innards, and organs due it being made of bone...
What would happen if I dug a hole through the earth and jumped in...
Digging a hole through the center of Earth is impossible with current technology and for many other reasons. However, let's do a thought experiment...
Where does ammonia come from?
Ammonia is made by something called the Haber process which combines nitrogen from the air with hydrogen derived mainly from a natural gas such as methane....
Should I top off my gas tank after the pump handle clicks?
Topping off your gas tank (aka gas topping) is not a good idea for mechanical, environmental, and financial reasons. Any gas you put in...