6 Mark question Evolution of the atmosphere

Last updated 12 months ago
1 question
MTD. Make a model answer for this question in your books
   ___________  has increased overall 
 ___________________  decreased overall 
   water vapour has ______________  overall 
 carbon dioxide small increase over last ________  years 
Explanations 
 carbon dioxide decreased due to and oxygen increased due to___________________  
(carbon dioxide + water -> sugar + oxygen in the presence of light)  
   water vapour ______________  to form the oceans 
   carbon dioxide ______________  in the oceans 
   carbon dioxide formed ________________  rocks (limestone) 
   carbon dioxide formed fossil __________  
   carbon dioxide increased by __________  activity 
   carbon dioxide increased from burning of ___________  fuels