<span>Muscle cells are uniquely adapted to contractile function due to three main things. FIrst, they have a large capacity for storage of readily available glycogen to use for work. Second, they contain the actin and myosin cross-bridge cycling structure to perform a contraction of a muscle fiber. Finally, each fiber has central nervous innervation to control contraction and relaxation of the muscle fibers.</span>
        
             
        
        
        
Answer:
Pandemic is related to disease and epidemic isn't
Explanation:
 
        
                    
             
        
        
        
Answer:
Deposition
Explanation:
Landslides occur under the effect of gravity. When a mass of rock or earth slides down from a mountain or from a cliff then this phenomenon is termed as Landslide. 
Landslides are considered to be a rapid method of erosion.  Wind, waves, running water, glaciers and gravity are the five agents of erosion out of which the gravity influences the process of Landslides. 
Landslides occur suddenly and are dangerous example of the movement of earth materials under the influence of gravity. When weathered material falls away from a cliff, it slides down under the effect of gravity and finally after reaching the hill, the material gets deposited there. This is called Deposition by landslides.
 
        
             
        
        
        
Hmm. This one’s simple. It’s definitely biodiversity, because if there are lots of organisms, people can fulfill their niches easily. Carbon dioxide and pollution just harms the organisms and salt water doesn’t do much good, except in ocean ecosystems. The answer is C: Biodiversity.
        
                    
             
        
        
        
Answer; 
A. the Sun's rays are nearly perpendicular to Earth's surface. 
Explanation; 
-Tropical region receives more solar radiation not only because the Sun’s rays hit the region more directly, but also because they travel through less of the atmosphere to get there. 
-Some radiation is absorbed as it travels through the atmosphere, so less energy is lost in tropical regions.