The study of soil has changed our world because soil filters our water, provides needed nutrients for our plants and forests. It also helps regulate Earth’s temperature as well as many greenhouse gases.
The meaning of this quote "A leader is best when people barely know he exists; when his work is done, his aim fulfilled, they will say; we did it ourselves" means if the leader is unknown to many people once he has finished or achieved a remarkable goal other people (such as Laozi) can steal the glory and be remembered for something they didn't do.
“The main reason for the industry's staggering growth is the state's film incentive program, which awards up to 30 percent of what a production spends back in transferable tax credits that can then be sold on the free market. The most recent iteration of the credit was rolled out in 2008”
I saw this on the internet so I think it’s C. Hope this helps!
they were very violet during the time of the mongolian empire , they took over land constantly
