In ecology, a group of particular organisms which live in a community is called POPULATION.
For instance, all the number of lions which live in a community make up the population of lions in that community. Populations of different species of animals that are found in that area combine together to form the community.
        
             
        
        
        
To act as a catalyst in chemical reactions
        
                    
             
        
        
        
Answer:
The correct answer is "random coils".
Explanation:
Random coil is a type of polypeptide secondary structure comprised of conformation that do not follow an established conformation but rather are oriented randomly. These random coils conformations provides flexibility to proteins, since the lack of a particular structure (such as alpha helices or beta sheets), allows the protein to bend, fold or move. 
 
        
             
        
        
        
Shady parts of plants such has trees 
        
                    
             
        
        
        
Answer:
When a sugary gummy bear is placed in water, there are more dissolved solutes inside the gummy bear. 
Explanation:
The sugary gummy bear has more solutes as compared to the water in which it is being soaked. When a sugary gummy bear is placed in water, water enters the gummy bear through osmosis as water tends to move to the place where there are more solutes. The sugar gummy bear has more solutes. So, the gummy bear  expands and increases in size due to the entrance of water into it.