The Three Most Common Micronutrient Deficiencies Affecting People Worldwide Are

question 54

Multiple Choice

The three most common micronutrient deficiencies affecting people worldwide are iron, iodine, and _____ deficiencies.

• A) vitamin A
• B) vitamin B₁₂
• C) vitamin D
• D) vitamin E

---

Definitions:

Metanephridia

Excretory organs found in some invertebrates, such as annelid worms, that help in the removal of metabolic wastes.

Tubule

A small tube or tubular structure, especially in biological contexts, such as the renal tubules in kidneys.

Hemolymph

The fluid equivalent to blood in most invertebrates, occupying the interior of their bodies.

Malpighian Tubules

Excretory and osmoregulatory system components found in insects and other terrestrial arthropods.