Why climate change may cause malnutrition​

If there will be no Rain

so

there Will be no good harvesting resulting in lack of crops hence it will cause malnutrition.

Climate change reduces agricultural yields and the nutritional value of staple crops, and it increases the prevalence and spread of diseases. These and other effects are closely linked with malnutrition in poor communities.

answerformal;

the rub-al-khali is also known as the arabian desert and the "empty quarter"