Answer. They are the “last trophic level” in some hierarchies because they feed on everything (National Geographic). However, according to the strict trophic level definition they would be primary consumers.
        
             
        
        
        
Answer:
A properly designed buffer of trees and shrubs can reduce noise by about five to ten decibels — or about 50 percent as perceived by the human ear, according to the USDA National Agroforestry Center
Explanation:
 
        
             
        
        
        
Answer: El Niño is a part of a routine climate pattern that occurs when sea surface temperatures in the tropical Pacific Ocean rise to above-normal levels for an extended period of time.
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<em>hope this helps !_!</em>
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ENJOY groovie DAY</u></h2>