After many years of trashing China, they are slowly cleaning up.
Answer: "A savage servility/slides by on grease" - Alliteration, when words that start with the same sound or same letter are used repeatedly. 2. "For the dark downward and vegetating kingdom" - Personification, is the metaphor used to paint an image in the mind of the reader; to emphasize a point.
I believe your best answer would be terrace
the potential for humans to provide more in-depth observational research than unmanned rovers,
