Answer:
The early focus of nutrition research was on the 4. Amount and type of nutrients needed to prevent deficiencies.!
Explanation:
Nutrition research is relatively young. One of the first developments was the first vitamin isolated in 1926. During this period of time, research was focused on nutrient deficiency diseases. Researching in the field of non-communicable chronic diseases, like diabetes, obesity, Etc. is recent. All these changes obey to the health context and the common diseases of the different periods of time. Option 1, 2 and 3 are examples of these young area of research.
Answer:
Explanation:
Tired eyes get dry, and rubbing stimulates the lacrimal glands to produce more fluid. Tiredness also closes your eyes, so you may rub to keep them open. Finally, there's a connection between the muscles that move your eyes around and your heart. When these muscles are stimulated, a reflex slows the heart.
