Over the last 30 years man-made CFCs have been the main cause of stratospheric ozone depletion. CFCs however, are not the only ozone-depleting chemicals. Other ODCs include the methylhalides, carbon tetrachloride (CCl4), carbon tetrafluoride (CF4), and the halons which contain bromine instead of chlorine.
Part of the Internet applications glossary: Yahoo! is an Internet portal that incorporates a search engine and a directory of World Wide Web sites organized in a hierarchy of topic categories.
Similar to the Google search tool, Yahoo can be used as a 100% free tool for reverse phone lookup. Instead of using the personâ name, you just need to type in the search box the phone number, then, Yahoo can run a reverse lookup for that exact phone number.