Question

Rewrite cited evidence in 7th graders response

The importance of an element in the body is not solely related to its percentage of body weight. The evidence in the table supports this explanation. For example, even though iron has a very low percentage of body weight (0.006), it plays a crucial role in carrying oxygen in the blood, which is essential for human survival. On the other hand, elements like magnesium and phosphorus have higher
percentages of body weight (0.05 and 1.0, respectively) but are equally important for bone formation, muscle function, and teeth structure.

Answer 1

The amount of an element in your body doesn't always show how important it is. According to the table, iron makes up only 0.006% of body weight, but it is very important because it helps carry oxygen in the blood (table). By contrast, magnesium (0.05%) and phosphorus (1.0%) are found in larger amounts and are also important for making strong bones, helping muscles work, and keeping teeth healthy (table). This shows that both tiny and larger amounts of elements can be essential for the body.