Ascientist has completed several trials to see how a new drug affects adults. which step will best assess the validity of his experimental design and results?

Who was thomas jefferson and what was his constitution toward the development of the us government

How did geographical features create a civilization in china

Alexander stephens’ opinion on secession and compromise led to what being written? a)the kansas-nebraska act b)the missouri compromise c)the u. s. constitution d)the georgia platform