True or false? cohort studies start out by measuring exposure and watching for the development of disease.

The answer is true. It is because the cohort studies focuses on investigating the disease in which it causes it and to identify the risk factors that may be link to it. They start in advance in which they will likely start of measuring exposure of the person in the disease and how it was developed.

b is the best answer for this question.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

i hope this