The whole human body is a lever system, that's how muscle work. Your joins are the fulcrum, your muscle contracts and hence is the effort. On the other side, whatever you're holding and the weight of your hand is the load. There are all 3 classes of lever system in your body.
 
        
             
        
        
        
Watermelon and chicken is the best answer possible
 
        
             
        
        
        
D<span>. </span>Primary succession<span> / </span>secondary succession<span> e. Genetic drift / </span>primary succession<span>. </span>d<span>. ... A predictable series of </span>environmental<span> changes </span>occur<span> in an </span>ecosystem<span> after a ... An </span>area<span> of </span>bare rock<span> outcrop is colonized by small lichens and mosses for ... Weed seeds will </span>not<span> disperse over a large enough </span>area<span> to colonize a prairie. a.</span>
        
             
        
        
        
Muscles - they are meat, and animals will eat the meat. They also decompose, leaving no trace of the remains.