Which of the following decsribes an important achievement of classical chinese civilizations?

Explanation:

Yeah It's A. There is a lot of stuff about why this is so important on the internet so if your doing an assignment you should really look at why this is the answer, otherwise you might be asked to describe the impact of paper and why it was so important and only have "China made it" XD.

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in contrast, the biological controls are self-sustaining, inexpensive and very effective once established. biological control could be used on thousands of golf course acres, improving their biodiversity and quality as wildlife habitat. in the process, the golf industry will be shown to be leaders in an environmental stewardship program of benefit not only to the lands they manage but also to the watersheds in which they exist.

question 10: the answer is c, to their constituents address a problem.

question 11: i think it would be domestic bills, which deal with american issues only and public bills, which affect the whole nation.