The volume of miners and industries using copper in the 20th century presented an exponential growth. Mining tends to extract the highest grade resources first, once they are the most profitable. With the intense activity achieved during the last century, the higher grade non renewable sources were quickly depleted, forcing the industry to start exploring lower grades sources to satisfy the demand.
It is also noteworthy that mining copper of higher quality causes more damage to the environment, having its protocols and restrictions consequently addressed by the legislation. Therefore the costs of mining 5% copper might be outweighed by a higher margin of profit from 0.5% copper which also is less damaging to the environment.
Making a colony should be the last one. :)
Made the Opinion poll .Opinion are usually made to represent the opinions of a population by conducting a muliple of questions and then extrapolating generalities in ratio or within confidence intervals.
Answer:
i think so but i am not sure
Explanation:
I think you forgot to add some detail but based on my research, the correct answer to this question is "soldiers." This is the type of attendants represented in this mosaic. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
