What is the mass and weight of a 15 kg object

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.

answer///terminator or twilight zone;