Answer:
你好 or in English it is nǐ hǎo
Explanation:
Hope this helped!
Moving from the details of Jerrika’s observations to the big picture of rubbing things together to make heat.
1. On our way to the library, we witnessed (or saw) a flock of birds flying.
2. Lying on the desk, was tom student’s paper.
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.
Many reasons in a free market capitalistic system; their product or service is not in great demand, their product /service is not the best one on the market in terms or quality/price, their product/service does not have enough publicity to sell well, big corporate companies (amazon, walmart, etc.) have a monopoly on most goods and services and sell them at lower prices while underpaying/ overworking workers