Railroad crossing signs come in what two kinds of shapes? A. Circle and crossbuck
B. Circle and pentagon
C. Octagon and equilateral triangle
D. Diamond and crossbuck

How does cloud cover affect how much infrared light is reflected back to the ground?

John locke, an enlightenment-era philosopher, influenced the american movement for independence. locke believed that all people were entitled to natural rights. which quotation from the preamble to the declaration of independence refers to natural rights?

On this map, the state of georgia is in which section of the map?