Which type of drug has never played a role in health care? opiates depressants inhalants stimulants?

What makes a dominant allele different from a recessive allele

What is a limitation of using a chemical formula, such as c6h1206, to represent a compound? the chemical formula does not show the types of elements that make up the compound. the chemical formula does not show how the atoms are connected to one another the chemical formula does not show the number of atoms of each element in a molecule. the chemical formula does not show the chemical symbols of the elements in the compound

Eutrophication caused by human nutrient pollution.