It’s true man. Don’t trust stuff
        
             
        
        
        
Answer:
Almost all the animals can heal wounds, but only some can regenerate. One hypothesis is that certain regeneration-specific genes are expressed exclusively in regenerative species and evolutionarily lost in nonregenerative species.
Explanation:
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Answer:
c
Explanation:
it is older because it was buried deeper than the fossil in layer d
 
        
                    
             
        
        
        
Top-down effects imply control through predation, including fishery, while 
bottom-up effects imply control through food abundance, often thought to be driven by climate or nutrient load.
<h3>What is Top down regulation ?</h3>
The top-down effect refers to a higher trophic level influences the community structure of a lower trophic level through predation.
<h3>What is Bottom up regulation ?</h3>
The bottom-up effect means that a lower trophic level in the biological network affects the community structure of higher trophic levels by means of resource restriction 
Learn more about Top down and bottom up regulation here:
brainly.com/question/18996262
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