The root "center, centr" means?

Iwill give all da points. imagine you are working for the u.s. branch of a chinese trading company. this trading company mainly trades chinese traditional art crafts and related items (such as chinese paintings and chinese music instruments). this week, your company had a promotion event, and a lot of goods were sold. now that the event is over, your manager asks you to write him a report in chinese. in this report, you are required to include: description of the chinese traditional art items being sold, their attributes such as colors and amount sold; price for each type of goods, and the total profit, in both chinese and u.s. currencies; your manager needs you to give an overall evaluation about what the most and least popular items are, and how people reacted to this promotion event – whether they liked this event or not. write as much as you can in chinese characters. it can be super simple btw

Judy blume's career as an american writer spans four decades and includes many literary awards. she is most famous for her novels geared toward pre-teens. one notable example is tales of a fourth-grade nothing. however, blume also has had success writing for an adult audience. three of her novels for adults reached the new york times best-seller list. in a 2008 interview blume remarked, "i have so many stories left to tell! " by that time she had written nearly 30 novels. judy blume an exceptionally talented and productive american author. which of the following statements supports the main idea in this paragraph?

These two elements threaten ecosystem biodiversity.