Why does the nucleus of an atom have a positive charge but overall have a neutral
charge?

What were the success and failures that came to boyle’s excitements?

Air can be considered a mixture. which statement does not explain why?

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations