Answer:
Well some people don't get enough sunlight during winter and some don't drink enough orange juice. Others might have a disorder where their body doesn't produce enough vitamin d
Explanation:
Answer:
refraction
Explanation:
refraction happens when a wave passes from one medium to another at an angle
At least three a day because one for breakfast one for lunch and one for dinner
Answer: Public health measures such as pure food and water, and development of immunizations against many serious diseases such as polio and smallpox, coupled with enhanced economic conditions, are together credited with substantial reductions in the burden of infectious diseases.
