Identify how many of the original parent nuclei remain after three half-lives

What is the cellular process that releases the energy stored in food molecules

2pos suppose an object in free fall is dropped from a building. its starting velocity is 0 m/s. ignoring the effects of air resistance, what is the speed (in m/s) of the object after falling 3 seconds? give your answer as a positive decimal without units. answer here

Which characteristics can be used to differentiate star systems? check all that apply.