some science question in english 我出300人名币如果有人今天给我答案!

some science question in english 我出300人名币如果有人今天给我答案!
1.Why is there a world food crisis?
2.What is chlorpyrifos?
3.What are the advantages/disadvantages of using chlorpyrifos?(each has to have 3 answer and prove it)
4.How is the use of chlorpyrifos an economic issue?
5.How is the use of chlorpyrifos?
6.Is the use of chlorpyrifos a good or a bad idea?
我们科学在做这些..现在我们在写有关这个的作文..要求 1000个英文单词以上2500个以下..要bibliography..而且不能引用超过500个单词的copy!
我出300人名币如果有人今天给我答案!明天要教了!