Answer:
Make sure everyone meets criteria. 
Not taking supplements( As some may contain Vit D)
No tanning beds
make sure no one has a hypoactive response to vitamin d through whatever way. Injection, capsule, spray.
Check for genetic conditions or cancers like melanoma which indirectly affect vitamin d levels
Explanation:
These are some of the main things to look out for
 
        
             
        
        
        
Answer:
The body uses the food as energy (and proteins for bones).
Explanation:
ree
 
        
             
        
        
        
Answer:
rain is very important for life in certain areas, this is why you see little life in deserts and even they need rain occasionally. more rain will lead to more life, first, it will be the plants that move in, then once they grow, vegetation eaters will move in, then after that meat-eaters will move in to eat those creatures and the ecosystem will flourish.
 
        
             
        
        
        
Answer:
3.6 gramos 
Explanation:
a 6.6 le restamos 3 que es el peso del envase para poder solo calcular el de la tierra.
6.6-3=3.6
Espero estar bien y que te haya servido en algo.
 
        
             
        
        
        
28 find that the cell spends in prophase (number of cells in prophase divided by the total # of cells (36) multiplied by 100)