Where is the largest reservoir of carbon?

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

Based on the information in the graph, what can you conclude about humans in the world in general?

Brazilians, like the u.s., communicate directly and you have to be careful with the use of slang. their communication style is a.low-context b. high-context