Answer: Trade creation 
Explanation:
Trade creation is the increase in economic welfare which occurs when a country joins a free trade area, like the customs union. Trade creation will happen when the ltariff barriers has been reduced which leads to lower prices. 
Trade creation leads to lower cost on producers which will lead to a rise in economic welfare and consumer surplus. Trade creation also leads to expansion of trade. 
 
        
             
        
        
        
If you over pay or if you happen to do something and the IRS give you something but it is not normal for the IRS to give
 you money
        
             
        
        
        
honestly you would need all of them because they are very important to have as you get older
 
        
                    
             
        
        
        
Plants employ photosynthesis to convert water, sunshine, and CO2 into oxygen and simple sugars that the plant may use as fuel. It  is it important to add fertilizer to some soils because fundamental producers serve as the foundation of an ecosystem, fueling the subsequent trophic levels.
<h3>What is the photosynthesis process?</h3>
In the photosynthesis process, plants absorb carbon dioxide (CO2) and water (H2O) from the air and soil during photosynthesis. Water is oxidative within the plant cell, which means it loses electrons, but carbon dioxide is reductive, which means it receives electrons.
This converts water to oxygen and nitrogen to glucose. Photosynthesis is often used by plants to transform water, sunlight, and CO2 into oxygen and simple carbohydrates that the plant may utilize as fuel.
Therefore, Some soils require nutrients because basic producers contribute as the base of an ecosystem, feeding succeeding trophic levels. 
Learn more about the photosynthesis, refer to:
brainly.com/question/1757345
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