The bottom of geothermal sources is abundant in black-colored ores (sulfites) of iron, copper, zinc, nickel and other metals called "black smokers". Iron ores are rocks from which metallic iron can be obtained. Metals, originally disseminated on magma-laden or rocky paths, are concentrated in fluids and can be redeposited if they encounter favorable temperatures and pressure conditions, forming mineral veins.
Answer:
Description 1: "This need grew with the growth of the population" -: Skilled workers
Description 2: "Largest group of immigrants" -: Slaves
Explanation:
In the United States or Western Hemisphere contest, it is widely known that aside from European colonists or settlers, the largest group of immigrants are the slaves, which was a result of the majorly trans-Atlantic slave trade from West African territory.
On the other hand, in the process of developing the region of the United States and Western Hemisphere generally, there is a need for skilled workers in the industrial sectors of the country. For example infrastructural development, health care system, etc.
Hence, the correct answer in this case is:
Description 1: "This need grew with the growth of the population" -: Skilled workers
Description 2: "Largest group of immigrants" -: Slaves
Yes, it halted completely. No cars, commercial trucks, or auto parts were made from February 1942 to October 1945.
