Except for Novocain and related drugs that block action potentials, every drug with psychological effects acts at synapses.

The eye has receptors for three colors: red, green, and blue.

Indirect evidence that serve as substitutes for direct measurements of past climate.

Parvana unearthed a “trophy” from the ground while digging.  What did she find?

An adolescent’s concern with decisions about the future and the quest for self-understanding has been called an identity crisis.

Which of the following is not true about women in Afghanistan?

Which of the following terms identifies the person in a family who first reports a potential or actual genetic issue to the attention of a health care professional?

The Eighteenth Amendment to the Constitution

Bottled water has major ecological impacts, with energy costs 1000–2000 times greater than tap water and 1.5 million tons of plastic waste generated annuall.

The many scandals in Harding’s administration touched all of the following except