Does this help?
A floodplain (or floodplain) is a generally flat area of land next to a river or stream. It stretches from the banks of the river to the outer edges of the valley. A floodplain consists of two parts. The first is the main channel of the river itself, called the floodway.
 
        
             
        
        
        
What is the type of sunflower, and how fast does it use photosythesis? 
        
                    
             
        
        
        
It's likely to have a Solid Grey color. 
        
             
        
        
        
Answer:
 An acid increases the concentration of H+ ions. A base is a substance that releases hydroxide (OH-) ions in aqueous solution, donates electrons and accepts protons.
Acid:Lemons, oranges, vinegar
Base:Soap, toothpaste, bleach, cleaning agents, limewater,
Explanation: