What is second pollution

On the map below, which of the following rivers is identified by blue? the huang he river the yangtze river the han river the naktong river

Plz answer ! find the alps. what countries and country borders intersect this major mountain range? which borders seem to be defined by the edges of the mountains? which borders seem to be defined by the edges of the mountains? which borders cut across the mountains?

When you start from a given set of rules and conditions and determine what must be true you are using blank reasoning