Carbon would build up in the atmosphere.
Hope I helped! 
        
                    
             
        
        
        
<span>Cast is a fossil that is a copy of an organisms shape, formed when minerals seep into a mold.
A fossil formed when an animal, plant, or other organism dies, its flesh decays and bones deteriorate due to chemical reactions; minerals gradually enter into the cavity, resulting in a cast, also called a mold fossil, which is in the general form of the original organism.</span>
        
             
        
        
        
C. <span>corpus phase. 
This is how the phase is
 </span><span>Menstrual phase (From day 1 to 5)
Follicular phase (From day 1 to 13)
Ovulation phase (Day 14)
<span>Luteal phase (From day 15 to 28)</span></span>