Which std can be spread by skin-to-skin contact? (1 point)
genital warts
aids
hepatitis b
gonorrhea

Why aren't the stains like crystal violet and safranin washed away with water during simple staining?

What pattern of migration do whales follow?

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?