Which term names the longest geologic time frame?

eon

epoch

period

era

Nuclear experimentation is a major global issue that affects relationships between countries. describe why countries try to limit the testing of nuclear weapons.

A/an map shows the types of rock and/or sediment present in a particular region.a map that uses a range of colors and shading to represent the elevation, depth, or landscape of specific features on earth is a/an map.to show the dominant weather pattern in a region over a long period, a scientist is likely to create a/an map.a map has contour lines, which connect points at the same elevation.a map that uses shading to represent rates of violent crime across a state is an example of a/an map.

Political boundaries are determined by the political party in control at the time. true or false