<span> (3) contain structures that perform life functions</span>. Although unicellular organisms have less capacity to survive than multicellular organisms, they contain internal structures or organelles that perform different functions to maintain stability and survival.
        
             
        
        
        
Answer:
it speeds up the process of the green house effect when trees are burned down is a large area it makes less homes for animals
 
        
             
        
        
        
Answer:
1. Support 
2. Protection
3. Movement
4. Supply & Storage
Explanation:
1. Support :  It provides a framework to support the organs and tissues of the body.  
2. Protection:  It protects our internal organs.  The skull protects the brain; the thorax (sternum, ribs and spine) protects the heart, lungs and other viscera (organs within the thorax).
3. Movement:  It provides a framework for muscles to attach.  Then when the muscles contract they pull on the bones of the skeleton, which act like levers to create movement. 
4. Supply & Storage:  The bones that make up the skeleton are a source of both red blood cells (which transport oxygen) and white blood cells (which fight infection), which are formed within the bone marrow.