That's right, the correct answer is
<span>A) The isotopes have a long half-life and only remain radioactive for a long time period
The half life of an isotope is the time it takes for the amount of the sample to reduce to half of its initial value. If an isotope has a long half-life, it means it takes a long time to reduce down to a significant level, so it will remain radioactive for a long time period.</span>
Weight is the force of gravity and gravity changes due to location like on the moon there is a different force of gravity
Answer:
False
Explanation:
The density is mass divided by volume
The amplitude of a sound wave is directly related to the loudness of the sound.
This answer of the strength and directions of the magnetic field is a
