Answer:
i believe the answer is 3
not positive though
Explanation:
 
        
                    
             
        
        
        
<span>Notice a couple of things
different between (A) and (B). It was NOT the first time a biologist
proposed that species changed through time (so it's not B). But it
finally *solidified* that idea by giving "change through time"
(evolution) a MECHANISM. It gave a plausible explanation for WHY
species change over time, in a testable way that made sense and had
evidence to support it. 
So it finally dismissed the idea that species are constant. 
It also emphasized that the simple presence of *variation* within a population was a key reason for evolution. 
While we're at it ... (C) is wrong because it's not *individuals* that
acclimate (adapt) to their environment, but the population (the species)
as a whole. 
And (D) is wrong because it had nothing to do with economics or the monarchy.</span>
        
             
        
        
        
Answer:
i think it's A. why? because bumblebees pollinate flowers making more grow but dragonflies EAT the bees so they'll decrease.
 
        
             
        
        
        
Answer:
A.
Explanation:
It shows a clear view of what a group of cells of a plant would be like.