A clade is a group of species that includes an ancestral species and all of its descendents
        
             
        
        
        
Answer:
Explanation:
1) 250 indivuals
2) Year 3
3) 4 years
Quick answer :
250, 3, 4
(you can find this on brainly) link:  brainly.com/question/17375720
(im 13 so heck)
 
        
             
        
        
        
The answer is a. I learned about this in psychology.