Mining can cause emission of toxic chemicals. All of these answers. spoils heaps and tailings. acid mine drainage. collapse of land.

In 2009, the author pawel bozyk, described brazil as a newly industrialized country. while its economy had not yet reached that of highly developed countries, brazil has moved itself into being a significant member of the international economy. what economic model does brazil fit into, regarding its development path?

What structure on the south african coast has a range of 63 km and releases flashes every 30 seconds?

The ozone hole is at its biggest each year in the ? hemisphere in the ? season.