Martian Environment: Atmosphere, Soil, and Climate

• What is the composition of the Martian atmosphere?
  
  
• Is their water on Mars?
  
  
• Is their oxygen on Mars?
  
  
• How cold is it on Mars...during day and night cycles?
  
  
• Does Mars have seasons?
  
  
• Are their indigenous resources on Mars for human survival?
  
  
• Are their other know hazardous on Mars?
  
  
• Is any life form known to already exist on Mars?