Answer:
Acid rain is slowly destroying once-resistant granite. Acid rain is created by air pollutants. ... The chemicals fall to earth as acid rain. Of all the building stones, granite is the least susceptible to acid rain because its composition is of feldspar and quartz, both of which resist attacks of acid.
Reasons
1) the lack of an effective central government means there is nowhere for the somali people to turn for aid
2) the country dry climate makes it nearly impossible to grow enough food to feed all of the somali people
3) constant clan warfare deprive the somali people of the goods and services they need to acquire the basic necessities for life
-Mountains provide us with freshwater, energy, food, biodiversity, and medicinal products – resources that may become very rare in the coming decades. They are also very prone to climate changes, land degradation, deforestation and natural disasters.
I think your answer is B.) The objects must be in direct contact with one another
A Becuawe if you really think about it it’s A