List at least three negative effects of undernutrition.

Three negative effects are mental development, irritability, low weight

Explanation:

Undernutrition can be understood as insufficient provision of energy and nutrients. It is one of the most common problem. It affects around 900 million people around the world. It is also responsible for highest morality rate in the children.

There are few immediate causes of low in quantity, nutrients density or variety. Family food insecurity is underlying cause of undernutrition. Unhygienic living condition for example poor water supplies and sanitation.  

i think she would gain 18 grams

yes. i think it is for sure.