I beleive that the plasma membrane is B. Semi permeable
        
             
        
        
        
Answer:
the branch of biology and medicine concerned with the study of embryos and their development.
Explanation:
sorry if it is wrong!!!
 
        
             
        
        
        
The immune system. It produces antibodies which fight the bacteria or virus that caused the infection
        
             
        
        
        
Answer:
a fossil that is useful for dating and correlating the strata in which it is found.
Explanation:
Maybe D I hope it helps you 
 
        
             
        
        
        
A GWAS can be performed by actually genotyping as few as 300000 to 1million