Timed quiz will give brainleist and it is just true or false plz diseases of the blood are not serious. true or false

Gregor mendel was the first scientist to use statistics to analyze scientific data before mandel's experiments, scientists believed that organisms acquired traits from their environment and pass them on to their offspring after mendel's discoveries were accepted scientists realized that traits passed to offspring were the result of genes being passed from parent to his parents this is an example of

What causes darkening of the skin as melanin production increases

A60-tooth gear is connected to a 72-tooth gear.if the smaller gear turns 12 times,how many turns does the larger gear make?