Answer:
organisms that can't make their own food are known as heterotrophs
 
        
             
        
        
        
The answer is the first one because it doesn't create gases and, the third one doesn't even make any sense so its definitely not that one 
        
                    
             
        
        
        
Answer:
1.tissue
2.organ system 
3.organ
4.cell
5.tissue
Explanation:
1.Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
2.Tissues are groups of similar cells that have a common function. An organ is a structure that is composed of at least two or more tissue types and performs a specific set of functions for the body. Many organs working together to accomplish a common purpose is called an organ system.
3.Cells grouped together to perform a specialized function are known as a tissue. Tissues arranged together to perform a special function are known as an organ. Organs that together to perform the many functions of the body as a whole are called a system. ... Any abnormal development of tissues or organs.
4.Molecules are the chemical building blocks of all body structures. A cell is the smallest independently functioning unit of a living organism.
5.Tissue. Word used to denote a living thing. Organism. Level made up of a group of tissue working together. Organ.