La lluvia ácida en nuestro planeta ha afectado más las áreas de El hemisferio Occidental.
El hemisferio Norte.
El hemisferio Sur.
El hemisferio Oriental.

Tin has ten stable isotopes. the heaviest, 124sn, makes up 5.80% of naturally occuring tin atoms. how many atoms of 124sn are present in 82.0 g of naturally occurring tin? what is the total mass of the 124sn atoms in this sample?

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

What is i fracture in the crust called when land move up, down or sideways