What colony was heavily settled before 1660

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

What did the native title act do? a. it recognized and protected aboriginal rights to land. b. it stated that aborigines were to be counted as part of the census. c. it established aboriginal languages as official. d. it granted aborigines suffrage.

These are the abiotic factor or biotic factors that restricts the numbers, reproduction, or distribution of organisms.