What is a symbol?
a specific icon used to indicate a feature such as rocks
a specific icon used to indicate a feature such as letters
a table defining the colors, letters, and keys such as rocks
a table defining the colors, letters, and keys such as letters

Alow pressure system is formed when an air mass cools over a cool surface and sinks. true or false

Which of these fragmental sedimentary rocks would most likely form farthest from the land?

Ascientist is explaining how background cosmic radiation gives evidence of the big bang theory. she says that radiation has been detected everywhere equally as heat in the universe and is increasing. this has been shown to be residual radiation from the big bang. what error did the scientist make?