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

Chris lives in a city that experiences heavy rainfall with average annual precipitation of 882 millimeters. it is warm all year.mark lives in city with an average annual rainfall of 40 millimeters. it has hot summers and cool winters.chris's city is in a climate, while mark's city is in a climate.

Cardueline finches can be found in what areas of the world?