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   제 목   What I know about science-homework    상 태  
   작성자   alex64    등록일   2021-08-12
   내 용
 

I know gravity,gravity is a power of pulling on earth so we can stand here very well. And i know about O Zone too O zone is a thcik veil is protecting earth what O Zone protects? It protects the ultraviolet ray without O zone the earth will be very hot.

 

CORRECTIONS:
 I know gravity. Gravity is a power of pulling on earth so we can stand here very well. And I know about ozone too. Ozone is a thick veil that protects earth. What did ozone protects? It protects the ultraviolet ray, without ozone the earth will be very hot.

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