What is the most influential physical feature/system for human settlement?

Compare the quantity in column a with the quantity in column b. pa p a is tangent to the circle at a. column a column b ap a p ax a x question 4 options: the two quantities are equal. the quantity in column a is greater. the relationship cannot be determined from the information given. the quantity in column b is greater.

Following lenin’s death, who took control of the soviet union

What is the best evidence for the plate tectonics?