The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 318
... appear land plants appear oxygen reaches 3 percent of present atmospheric level ( PAL ) ; metazoa appear ; glaciation ; oxidative enrichment of banded iron formation ( BIF ) ; oxygen increasing carbon dioxide decreasing ozone ...
... appear land plants appear oxygen reaches 3 percent of present atmospheric level ( PAL ) ; metazoa appear ; glaciation ; oxidative enrichment of banded iron formation ( BIF ) ; oxygen increasing carbon dioxide decreasing ozone ...
Page 375
... appear as vertical striations called rays ; an arc with rays is called a rayed arc . In a more ac- Figure 2 : Aurora borealis . Multiple auroral arcs photographed in Alaska . V.P. Hessler tive form , called the band , the arc becomes ...
... appear as vertical striations called rays ; an arc with rays is called a rayed arc . In a more ac- Figure 2 : Aurora borealis . Multiple auroral arcs photographed in Alaska . V.P. Hessler tive form , called the band , the arc becomes ...
Page 1150
... appear to be a natu- ral progression from a split stick with two faces , one curved and the other flat . Cubic dice appear to be a rela- tively late development . ) The Game of Thirty Squares was adapted by the Ro- mans for their Ludus ...
... appear to be a natu- ral progression from a split stick with two faces , one curved and the other flat . Cubic dice appear to be a rela- tively late development . ) The Game of Thirty Squares was adapted by the Ro- mans for their Ludus ...
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aesthetic ancient appear areas arms artists aschelminths Asia Asian associated atmosphere atoms become body called Central centre century changes China continued countries criticism culture early Earth East economic effect electrons elements energy example exist field forces France function Games groups head human important increase India individual industrial influence Italy Japan known later less light lines living lower major mass means ment metres military mountain nature North objects observations occur organization original painting particular percent period physical Pleistocene political population position possible practice present produced radiation range region relatively remains represent result schools social society sometimes sources South Soviet species stars structure style surface temperature theory tion traditional types United usually various West western