The border between the State of Oregon and the State of California is on the 42 degrees latitude exactly (Latitude/Longitude was invented in the 3rd Century B. C). This is an example of what type of boundary?

What factors influenced brazil's current and future economic strength?

Can someone me? i need to have this done as soon as possible! i'm putting 20 points on this!

17. the soil erosion pictured here is the result of what? a. harvesting renewable resources at a rate greater than the sustainable yield b. a mudslide caused by excessive rains c. harvesting renewable resources at a rate lower than the sustainable yield d. the transition between geologic eras and eons