Kyoto Protocol to the United Nations Framework Convention on Climate Change came into force on 16th February 2005.This paper introduced the current trend about the global climate warming change,what greenhouse gases are,the main factors that the contributions of greenhouse gases to global climate warming change depend on,and main greenhouse gases that will be reduced according to the Kyoto Protocol.

Compact Disks(CD) can be divided into three types according to their functions:Compact Disk-Read Only Memory(CD-ROM),Compact Disk-Recordable(CD-R) and Compact Disk-Rewritable(CD-RW).This paper describes the composition and structure of CD and the mechanism of recording and reading the information in the CD.

This paper discusses the essence of color that substances present,the three factors in presenting color of substances and the main factors affecting colors of substances.Moreover,some common natural color phenomena are given,and the analysis of the color phenomenon shows that the color of substances has close relations with their structures,environmental factors and the vision of people.

This paper introduces the definition and functional mechanism of biodegradable polymer materials,the factors affecting microbial degradation and the applications of biodegradable polymer materials.Furthermore,several important biodegradable polymer materials are listed.

This paper introduces the invention,principle of sterilization,dispensing method of bordeaux mixture and the matters needing attention in using.

Scientific problem is a factor of scientific inquiry activity and impenetrate in scientific activity all along.In scientific activities,it is not that all scientific problems need inquiry,however,scientific problems which have inquiry value should be chosen to inquire into.