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Two Kinds of Iron
The human body needs iron to produce hemoglobin, a substance that helps red blood cells transport oxygen. Without enough iron, a person may feel tired and weak. Dietary sources of iron include plant sources, such as vegetables and beans, and animal foods, including poultry, red meat, and fish. However, plant and animal sources are not equal. The iron in plants, called nonheme iron, is not easily absorbed by the human digestive system. For example, a half cup of cooked spinach contains a healthy dose of over three milligrams of iron. Unfortunately, only five percent of that iron can be used by the body. On the other hand, the iron in animal foods, called heme iron, is better utilized. Heme iron is contained within a ring of protein, which helps the body to absorb it easily.
What is the main idea of the passage?

Respuesta :

mcarc09

Since the answer choices cannot be found online, we can use our own words to describe the main idea, which will be helpful for you to choose the correct answer.

The main idea is the following:

There are two types of iron, one from plant sources, one from animal sources, but the iron from plant sources is not well absorbed by the human body.

What is a main idea?

The main idea of a paragraph or text is the most important message that the author wants to convey. Here, we must find the main idea in the passage about two kinds of iron. Since we do not have the answer choices - and they couldn't be found online -, we will use our own words to describe the main idea.

After reading the passage, we can divide it into the following topics:

  • Two kinds of iron.
  • One kind comes from plants.
  • Another kind comes from animals.
  • The plant kind is not well absorbed by the human body.
  • The animal kind is better absorbed by the human body.

Putting those topics together, we can form the main idea. Let's do our best to avoid unnecessary repetition:

  • There are two types of iron, one from plant sources, one from animal sources, but the iron from plant sources is not well absorbed by the human body.

With the information above in mind, we can conclude that the main idea provided above is appropriate for the passage we analyzed here.

Learn more about main ideas here:

https://brainly.com/question/1119015

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