Which nations produce more of the earths pollution, more developed countries or less developed countries

What happens to rock when acid reacts with it?

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

Acharreadas is a popular mexican thing where people display varying skills of horsemanship much like what events in the united states?