Answer:
O True
Explanation:
Ecosystem engineers are able to modify the surrounding environment, either by creating new habitats or modifying/destroying existing ones to adjust them to their needs. These species can significantly alter their environments, having a large impact on the species richness as well as modifying the availability of abiotic factors (e.g., water, space, etc) of a particular area. In certain environments, ecosystem engineers can even act as keystone species. Some examples of ecosystem engineers include, among others, beavers, woodpeckers, corals, etc.
 
        
             
        
        
        
Answer:
well for one you can find a lot for examples like if the light of a blazing hot sun was reflecting on a wooden stick the spot where the sun is reflecting would have a red mark with smoke comming out the stop
 
        
             
        
        
        
Answer:
B 20 amino acids, hundreds of proteins
Explanation:
I hope this helped :)
 
        
             
        
        
        
Answer:
12 m^2
Explanation:
Area = length * width 
A = 4m * 3m
A = 12 m^2
(Area is measured in square units)