As for the first part, Cost, Radiation exposure to humans, No water or heat, and unfit soil. As for the second, Astronomers, Botanists, and obviously your fair share of rocket scientists and math matitions for the way up.
Can you comment the article because there's no image on a article. Hope this helped, you probably didn't notice.
The promise of the new Dragon Army parallels Ender's success against all odds.
Answer:Bad stock Investments
Explanation:
The stock market crash of 1929 was largely caused by bad stock market investments, low wages, a crumbling agricultural sector and high amounts of debt that could not be liquidated.
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