The answer is b. The ability of all living things to maintain a relatively stable internal environment
        
             
        
        
        
Newton's First law of motion:  An object at rest stays at rest and an object in motion stays in motion unless acted upon by an unbalanced force.
This is also known as the law of inertia
Anyways,  you feel tossed around because unbalanced forces are acting upon you while riding on a roller coaster.  Hope this helps!
        
                    
             
        
        
        
I believe it is because the sun is directly over us which cause more heat since it is beating down. be sure to get a second opinion
        
             
        
        
        
Answer:
The answer is Plasmolysis