What geographic feature isolate japan?

If you wanted to follow the longest river and hike upstream,which direction would you head

The image shows a cross-section of a landscape. which could be the location where water emerges from the surface as a spring? 1 2 3 4

Which of the following is not a threat to rainforests? a. hunting and fishing b. unsustainable agriculture c. indigenous populations d. unsustainable logging