Answer:
Life cycle of a moss
Explanation:
LIFE CYCLE OF A MOSS FROM MATURED SPOROPHYTE STAGE
An embryo further develops into a pear-shaped  sporangium, which is the *sporophyte  stage of the plant*. The sporangium  contains spore sacs, each of which is the spore mother cell that undergoes meiotic division  to form four spores,The spores are released and germination 
takes  place giving  rise to a protonema, which develops into a new gametophyte plant. The gametophyte  generation or haploid phase of the moss is from the production  of haploid spores after meiosis  to the period just before fusion of the haploid antherizoid or haploid ovum. The sporophyte generation or diploid  phase is from the diploid  mother cells just before meiosis. 
Examples of moss plants include Funaria hygrometrica, Polytrichum commune, Barbuda Indica.
 
        
             
        
        
        
Answer:
more carbon became present in Earth's soil, I think that but not sure
 
        
             
        
        
        
The answer, is bryophytes are also called pioneer plants. 
i hope this helped you out :)
        
             
        
        
        
Answer: Example for multiple alleles is human blood type 
Explanation:
Blood types exsist as four possible phenotypes A,B,AB, and O .