State the age of a given rock if 6.25% of argon is remaining.​

Given: circle a externally tangent to circle b. how many possible common tangents to circles a and b can exist? 2 3 4

How have ethnic groups shaped the population in central america and the caribbean? how has migration shaped the population in central america and the caribbean? how has small land areas shaped population in central america and the caribbean? how has a rapid population growth shaped the population in central america and the caribbean?

Explain how the movement of tectonic plates causes the development of different landforms and naturak disasters