Why did Dalton’s hypothesis seem so unlikely to other scientists?

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

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.