Stage 4 sleep. Stage 3 also often emits delta waves.
radiation
Zinc
This is a radioactive isotope.
volcano is my answer
A large celestial body that is composed of gas and emits light is called a star.
A large celestial body that is composed of gas and emits light is called a star.
A volcanic hole is called a 'chimney ' while it emits lave and a 'caldera' when it solidifies.
In a battery, or voltaic pile, the negative terminal or wire, called the anode, emits electrons in an electrical circuit. The other terminal, called the cathode, collects electrons in an electrical circuit.
No, it's called "radioactive." "Retroactive" is something that's active in regards to the past.
I think it is called neon. Something like that but I'm not so sure sorry!
Yes. It's called that due to the smell it emits when burned.
true