Sickle cell trait is not a disease; it is an inherited red blood cell condition that can affect athletes at all levels. While sickle cell trait is not a barrier to playing competitive sports, athletes with sickle cell trait have experienced significant physical distress, including collapse and death during intense exercise. Heat, dehydration, inadequate acclimatization, altitude and asthma can increase the risk for medical complications in athletes with sickle cell trait Through awareness, education and proper physical conditioning under the supervision of a primary athletics health care provider, athletes with sickle cell trait may safely achieve outstanding athletic performance
 
        
             
        
        
        
Answer:X-ray crystallography and NMR spectroscopy
Explanation:
 
        
             
        
        
        
The example of a nonpoint source of freshwater is the first option: <span>pesticide runoff from farm fields. This is one of the most common nonpoint source of poullution</span>
        
             
        
        
        
Answer:
A) National Weather Service Norman Oklahoma
 
        
             
        
        
        
Facilitated diffusion therefore allows polar and charged molecules, such as carbohydrates, amino acids, nucleosides, and ions, to cross the plasma membrane. Two classes of proteins that mediate facilitated diffusion are generally distinguished: carrier proteins and channel proteins.