Answer:
C. you may not begin to cross the street
Answer:
the answer is A Milk Quality and Products
Explanation:
iCVE 2021
Answer:
Radioactive isotopes are unstable and will decay. ... The isotopes will decay into a stable isotope over time. Scientists can tell how old the rock was from looking at the radioactive isotope's half-life, which tells them how long it would take for there to be half the radioactive isotope and half the stable isotope.
