<span>ore
An ore is a type of mineral or rock which has a high enough concentration of a desirable element such that it's economical to extract that desired element. This means that the actual concentration of metal in an ore varies quite dramatically depending upon the metal. For instance, Bauxite, which is the ore for aluminum contains approximately 15% to 25% aluminum. But for gold, it's not uncommon to profitably extract 1 ounce of gold from several tons of rock.</span>
I think the correct answer among the choices listed above is option B. Decrystallization is not a method by which minerals form. Decrystallization is the breaking down of the mineral's crystalline structure therefore forming other products not a mineral.
Answer:
The Pampas region has a big economic impact as it is the agricultural heart of Latin America.
Explanation:
The Pampas is a region that is mostly comprised of lowlands. Naturally, it is a biome where grasses dominate. The soil is highly fertile and the region as it is is relatively large. Humans have easily seen the potential of the Pampas and spend no time converting it in an agricultural landscape.
Latin America is a region that heavily relies on agriculture, both farming and raising cattle. Large, relatively flat land with fertile soil is excellent for farming, so the Pampas has been heavily exploited for the large-scale production of agricultural goods. Also, raising cattle is among the highest in the world in Latin America and it is constantly growing as a sector, and grasslands are needed to sustain the cattle, so the Pampas again is the place to exploit for it. While this has a big and positive economic impact, the effects on the flora and fauna of the Pampas have been devastating, to say the least.
Answer:
Yes.
Explanation:
The duration of hours of the day is longer during the summer and shorter during the winter and this influences the temperature in these two seasons. As the day is longer in the summer, it means that the hemisphere that this summer has more exposure to the sun and therefore has higher temperatures. The opposite happens in the winter, as there is less exposure to the sun, due to the shorter day, which can help in decreasing the time.
