How do you determine the atomic mass of an element with 20 electrons and 17 neutrons?

(! ) what’s fracking and what does it have to do with carbon, carbon dioxide, or fossil fuels?

As a small change in a person's dna can cause a genetic disorder

If a baby girl guinea pig looks almost identical to its mother, does this then mean that it inherited more alleles from its mother? explain. (hint: think about the vocabulary words dominant and recessive.)