Answer:
An ecologist must consider both of the speciation and extinction of an organism or when analyzing the diversity the life on earth because of the following reasons;
-          It is a role of an ecologist
-          It is part of their job
-          This will tell the existence of the organism
-          The organism’s life span on earth
-          How it was existed and were extinct
Explanation:
 
        
             
        
        
        
If we had no cilia in our trachea, our lungs would be filled with dust and microorganisms that we breathe in.
        
             
        
        
        
Answer:
I don't know
Explanation:
I don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowI don't knowHow are primary and secondary ecological succession similar?
1 Both types of succession require the same amount of time to occur.
2 Both types of succession result in greater biodiversity over time.
3 Both types of succession decrease the stability of an ecosystem.
4 Both types of succession have the same starting conditions.
5 Both types of succession eventually lead to a community closer to equilibrium.
Hold on, our servers are swamped. Wait for your answer to fully load.
 
        
             
        
        
        
The answer is true, pigs cause air pollution by releasing methane into the air.<span />
        
             
        
        
        
A/Cell membranes and cell walls are selectively permeable and aid in communication. 
Explanation:
Cell Membranes or cell wall have phospholipid bi layer which functions
as a selectively permeable barrier that separates an internal
environment from an external one. They are selective permeable through
passive process (concentration gradient) allowing certain molecule
diffuse into cells