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Examen
SCI 200--Unit Milestone--Practice 1 Questions and Answers 100% Solved
Correctly identify what event, agent or process of those given below is responsible for the current 
atmosphere on Earth of 20% oxygen. 
Volcanic activity 
Photosynthesis 
Ozone layer formation 
The water cycle Photosynthesis 
Which of the following statements about continental drift is true? 
Because of continental drift, the majority of most continents' landmass remains underwater, which 
has severely limited biodiversity. 
After the continents were separated, continental drift slowed, until ...
Examen
SCI 200--Unit Milestone--Practice 1 Questions and Answers
PopularCorrectly identify what event, agent or process of those given below is responsible for the current atmosphere on Earth of 20% oxygen. 
 
Volcanic activity 
Photosynthesis 
Ozone layer formation 
The water cycle - Photosynthesis 
 
Which of the following statements about continental drift is true? 
 
Because of continental drift, the majority of most continents' landmass remains underwater, which has severely limited biodiversity. 
 
After the continents were separated, continental drift slow...