This type of transport is called active transport
        
             
        
        
        
Answer:
C
Explanation:
For productivity to increase, it require an increase in the input which has to be directly proportional to an increase in the output 
 
        
             
        
        
        
Answer: Energy decreases as it moves up trophic levels because energy is lost as metabolic heat when the organisms from one trophic level are consumed by organisms from the next level. Trophic level transfer efficiency (TLTE) measures the amount of energy that is transferred between trophic levels. or in materials that the consumer does not digest, or  through movement
Hope it helps! ^w^
 
        
             
        
        
        
Cellulose, chitin, and peptidoglycan are all considered as
carbohydrates. Now in the molecular level of these carbohydrates, structural polysaccharides exist as sets of long, parallel
strands that are linked to one another. Due to this arrangement, pulling
and pushing forces are being withstand.
 
        
             
        
        
        
It is an inference that 
<span> there are tracks from three different animals in the rock.</span>