Answer:
The given situation is an example of <u>density dependent factor</u>.
Explanation:   
The density dependent factors are the factors that regulate the growth of a population. It is defined as the factors whose effects on the growth or size of a given population vary with the population's density. The various types of density dependent limiting factors are diseases, migration, safe drinking water, food availability, migration etc.
<u>Therefore, the given situation is an example of density dependent factor.</u>
 
        
                    
             
        
        
        
It's called a <span>trephination!! 
- Good luck</span>
        
             
        
        
        
1. rapid cooling of basaltic lava
2. divergent plate boundaries on them mid ocean ridge system
        
             
        
        
        
There are 
39
 chromosomes in their haploid cells.
Explanation:
During meiosis I, the 
78
 chromosomes in a diploid cell line up at the equator of the cell. Note that the chromosomes have already replicated.