The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 1038
... plants , as well as upon water . Plants utilize sunlight in a process called photosynthesis to pro- duce the food upon which animals feed , to provide , as a by - product , oxygen , which most animals require for res- piration . At ...
... plants , as well as upon water . Plants utilize sunlight in a process called photosynthesis to pro- duce the food upon which animals feed , to provide , as a by - product , oxygen , which most animals require for res- piration . At ...
Page 1039
... plants ; about 44 percent is used in the evaporation of wa- ter from soil and plants , 54 percent is reflected or dissi- pated as heat , and a fraction of a percent is consumed by the respiration of plants and animals in the field . Not ...
... plants ; about 44 percent is used in the evaporation of wa- ter from soil and plants , 54 percent is reflected or dissi- pated as heat , and a fraction of a percent is consumed by the respiration of plants and animals in the field . Not ...
Page 1040
... plants utilize the ammonia directly , but most depend upon the oxida- tion of ammonia to nitrite ( NO2 ) and then to nitrate ( NO ) by other soil bacteria before it is absorbed by plant roots . This process is known as nitrification ...
... plants utilize the ammonia directly , but most depend upon the oxida- tion of ammonia to nitrite ( NO2 ) and then to nitrate ( NO ) by other soil bacteria before it is absorbed by plant roots . This process is known as nitrification ...
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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