Answer :
He was the the first to have a theory and and an explaination to prove it .
I just had this question and I got it wrong but here's what is says to put:
-Democritus' ideas were not supported by evidence.
-Dalton's theory was the first scientific theory because it relied on scientific investigative processes.
-Dalton's theory was supported by evidence and repeated investigation
-Democritus' ideas were not supported by evidence.
-Dalton's theory was the first scientific theory because it relied on scientific investigative processes.
-Dalton's theory was supported by evidence and repeated investigation