The grouping of gestures, facial expressions, and postures into nonverbal statements is known as

Astudent is given an assignment to demonstrate diffraction. he takes a photograph of a straw in a glass of water. the straw appears bent at the water level. which best describes this example? a) this is a good example of diffraction. b) this is an example of dispersion and not diffraction. c) this is an example of refraction and not diffraction. d) this is an example of reflection and not diffraction.

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Which is an example of an exothermic process?