Although the hepburn act passed congress with relative ease during the term of theodore roosevelt, the pure food and drug act a) was enacted under the leadership of president taft. b) was not enacted until the later creation of the food and drug administration. c) was overturned in a later decision by the supreme court led by chief justice taft. d) was enacted only after the public outcry following the literary works of muckrakers.

name two ways organisms join a population and two ways organisms leave a population. two ways organisms join a population are birth rate and immigration. two ways they leave are death rate and emigration.

explanation:

radioactive dating, also known as  radioisotope dating  is a process that in  estimating the approximate  age  of  rocks. these data can be analyzed from  the studies dealing with the  decay of the radioactive elements that are present in these rocks. in nature, there are a few types of materials or atoms which are quite unstable and they spontaneously decay or breakdown to form other kinds of atoms.