Analytical chemistry is the branch of chemistry devoted to understanding the composition and nature of matter, as well as the changes that occur during chemical reactions.

Biosafety is the prevention of large-scale loss of biological integrity, focusing both on ecology and human health.

Breast milk is the milk produced by the mammary glands of female humans to nurture their offspring.

The Centers for Disease Control and Prevention (CDC) is a national public health agency in the United States.

A chemical element is a pure substance that is composed of atoms with the same number of protons in their atomic nuclei.

Environmental health is the branch of public health that is concerned with how our environment impacts human health and well-being.

The Wikipedia page for the European Union provides an in-depth overview of the supranational political and economic organization that consists of 27 member states located in Europe.