Answer:
Most beaches get their sand from rocks on land. Over time, rain, ice, wind, heat, cold, and even plants and animals break rock into smaller pieces. This weathering may begin with large boulders that break into smaller rocks. Water running through cracks erodes the rock.
The correct answer is - A) subsistence farming.
Subsistence farming is the type of farming that is mostly practiced in the less developed countries. In here we have production that is just about enough for the needs of the country (and big portion of the production doesn't even come out on the home market, but you eat what you produce, or trade with someone you know). Also this type of farming is still based on primitive tools and is heavily dependant on the climate, and that makes it very unstable and more often than not people are starving because not enough food has been produced.
You have to fit in in order to be in the group
The correct answer is A. Tierra Fria.
Tierra Fria is composed of highlands, but even though it is very high area, because of the low latitude and high altitude, this area has a very pleasant climate which is actually pretty similar to the oceanic coastal regions of the temperate climates. Because of this, it is very suitable for the livestock, since the weather conditions are very nice, the grass is green for most of the year and it is in abundance, plus the region is clean, and also lacks predators.
