Examlex
By combining three oxygen atoms, a/an ________________ layer formed in Earth's atmosphere, which absorbs UV photons.
Puckering
The act of contracting or gathering into wrinkles or folds, often referring to the lips.
Saliva
A clear liquid secreted by the salivary glands in the mouth, important for digestion and maintaining oral health.
Behaviorists
Psychologists who focus on observable behaviors and the ways in which they're learned, often through conditioning, without reference to mental processes.
Conditioning
A basic kind of learning that involves associations among environmental stimuli and an organism’s behavior.
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