Ore is natural rock or sediment that contains one or more valuable minerals, typically containing metals, that can be mined, treated and sold at a profit. Ore is extracted from the earth through mining and treated or refined, often via smelting, to extract the valuable metals or minerals.
The Alpha Centauri binary stars are 4.3 light years from the Earth; the Earth to the Sun is 0.00001581 light years in distance, and from the Sun to Jupiter is <span>0.00008229 light years.
Therefore (4.3 + 0.00001581) / 0.00008229 = 52254.41 times further</span>
Answer: A "The Decrease in trade among societies
Explanation:
As cities grow, s does their impact on other societies. In order to grow more, cities need to trade materials they have abundance in for materials they don't
Answer: The answer is C). Nitrates
Explanation: Animal wastes and nitrogen-containing fertilizers are used to grow plants and they contain nitrates. Nitrogen exists naturally in soils, typically bound to organic matter and mineral soil material. When these fertilizers are used, they increase the concentration of nitrates in the environment, especially in the soil.
