英语百科知识竞赛选择题

英语百科知识竞赛选择题
急求一些有关于环境的百科知识问题,要用英语来表述,类型为选择题!
今天下午之前必须得到答案，所以很急，如果回答的好再追加50分！！！

以及
Question 2
Question:The pollutant responsible for ozone holes is ____________.
1.CO2
2.SO2
3.CO
4.CFC
Answer:4
Question 3
Question:One of the best solutions to get rid of non-biodegradable wastes is _________________.
1.burning
2.dumping
3.burying
4.recycling
Answer:4
Question 4
Question:Animal dung is _________________ waste.
1.biodegradable
2.non-biodegradable
3.hazardous
4.toxic
Answer:1
Question 5
Question:Which of the following is biodegradable?
1.iron nails
2.plastic mugs
3.leather belts
4.silver foil
Answer:3
Question 6
Question:Which of the following is non-biodegradable?
1.animal bones
2.nylon
3.tea leaves
4.wool
Answer:2
Question 7
Question:Name one non-biodegradable waste which may pollute the earth to dangerous levels of toxicity,if not handled properly.
1.DDT
2.CFC
3.Radioactive substances
4.PAN
Answer:3
Question 8
Question:In a lake polluted with pesticides,which one of the following will contain the maximum amount of pesticides?
1.small fish
2.microscopic animals
3.big fish
4.water birds
Answer:4
Question 9
Question:Name the substance whose accumulation in pelicans of Lake Michigan led to the formation of thin shells of their eggs.
1.CFC
2.PAN
3.DDT
4.PAC
Answer:3
Question 10
Question:Name the process in which a harmful chemical enters the food chain and gets concentrated at each level in the food chain.
1.concentration
2.biomagnification
3.expansion
4.pollution
Answer:2