Answer:
you are using your shoulder muscle. The reason you are using this muscle is when you put your arm strait up there is no reason to use a bicep or tricep muscle.
Explanation:
 
        
             
        
        
        
Los Angeles has the higher risk of earthquakes
        
                    
             
        
        
        
Fluid shift from vascular to interstitial can cause the water in blood is decreased, causing the other component level in blood seems to be increased(hemoconcentration).
In this case, hematocrit is one of the marker in laboratory that can be used for assessing hemoconcentration.
        
             
        
        
        
Answer: Non-living factors in an ecosystem.  
2. A large region of land with a distinct climate and certain types of plant and animals.	
Explanation:
. Biosphere
b. Biome
c. Population
d. Abiotc
e. Ecosystems
f. Biodiversity
g. Food Chain
h. Aquatic
i. Community