The appearance of a star to twinkle, or flicker, is caused by ____ of light through regions of different densities

A) reflection
B) refraction
C) diffraction
D) scattering


B

Environmental & Atmospheric Sciences

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Waste reduction is based on the four Rs: refuse, reduce, reuse, and recycle. From an environmental perspective, why is recycling the least preferred of these options?

What will be an ideal response?

Environmental & Atmospheric Sciences

The youngest event represented in this block diagram is

A. erosion of a canyon by a river. B. formation of the lowest layer. C. retreat of the seas. D. deposition of the top layer.

Environmental & Atmospheric Sciences

The geographer Vidal de la Blache regarded food supply as

A) the weakest available example of a folk custom. B) the folk custom least closely tied to a particular climate. C) more subject to modification than weapons. D) less subject to modification than clothing and weapons. E) a limited resource that would not keep up with population growth.

Environmental & Atmospheric Sciences

Acetylation of histones occurs at which residues of the protein?

A) cysteine B) histidine C) lysine D) phenylalanine

Environmental & Atmospheric Sciences