The red algae was the plant group that includes the Ancestors of plants.
        
                    
             
        
        
        
Essential amino acids are amino acids that must be supplied to one's body by their diet because they cannot be synthesized from scratch. 
        
             
        
        
        
So this my friend is a Contact Force. Anything that involves pushing, pulling, or creating friction is a contact force. So you will say it’s a contact force. Please Mark me brainliest
        
             
        
        
        
Answer:
15% of the world does not have access to clean fresh water.
Explanation: