Design an investigation about the effect of carrying backpacks on students health using the steps of the scientific method

What is the period of cell life when it is conducting

The starting materials in a nuclear change have a total mass of 2.3465 x 10-27 kg. after the change, the resulting materials have a mass of 2.3148 x 10-27 kg. how much energy was released during the change? 2.85 x 10-12 2.08 * 10-10 j 0 211 * 10-10 j 8.56 * 10-43

Are humans interfering with or a part of evolution happening today? find examples of evolution seen in recent history that could be caused by human activity.