radon
Naturally radioactive promethium was briefly used as a replacement for radium in self-luminous paint. It is element 61.
a)antibiotics
Some isotopes are radioactive, some are not.
radiometric dating is base on the half life of the radioactive atoms
Radioactive.
This phenomenon is called radioactive disintegration.
It is radioactive decay.
All elements with an atomic number >83 are naturally radioactive
Naturally radioactive promethium was briefly used as a replacement for radium in self-luminous paint. It is element 61.
FAUNA are the animals that live in a certain area
a)antibiotics
Radioactive wastes
Some isotopes are radioactive, some are not.
No, it's called "radioactive." "Retroactive" is something that's active in regards to the past.
radioactive decay
sugar can be found naturally in almost all fruits and in a tall, fibrous plant called sugar cane. It also grows naturally in its crystal form on certain types of rocks.
a basement..? pretty simple.