Answer:
1. The process in which organisms find and colonize a near lifeless area. 
2. They are different from each other because secondary supports life, as primary does not.
3. Pioneer species is a hardly classified species which establish themselves in  a disrupted ecosystem and trigger the process of ecological succession.
4. Biotic factors support life and the aspects. Abiotic factors involve external life. They interact with each other when the abiotic provide for the biotic.
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This is true because if they didn't they wouldn't have the same biological mother.
        
                    
             
        
        
        
Answer:
In compare to eukaryotes,prokaryotes are morphologically simpler,more evolutionary primitive,less sensitive to physical environment.
Explanation:
Prokaryotes are unicellular organism which don't possess cell organelle like nucleus,mitochondria,Endoplasmic reticulum,golgi body, etc.
They are the first living organism in the primitive earth and the genetic components are located in the cytoplasm which is enclosed by cell membrane.
prokaryotes contain 3 domains that are Archaea, bacteria and eukarya.
The cytoplasm is enclosed by cell membrane.
Molecular studies have reveal that eukaryotes are evolved from prokaryotes.
Some prokaryotes bear long projection which helps them for locomotion,called as flagellum.This is present in gram positive and gram negative bacteria.
 
        
             
        
        
        
An organelle is a specialized structure inside Eukaryotic cells.
        
             
        
        
        
<span>DNA damage leads to mistakes in mitosis that produce cancer</span>