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What did you learn from the article ANSWER:
2. Which elements can be found in a human's blood and bones ANSWER:
3. What was the connection of the article you read to the lesson about the formation of elements? ANSWER:
What did you learn from the article ANSWER:
2. Which elements can be found in a human's blood and bones ANSWER:
3. What was the connection of the article you read to the lesson about the formation of elements? ANSWER:
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2.It is thus no wonder that 99% of the atoms in the human body come from six elements: Hydrogen (62.9%), oxygen (almost 24%), carbon (nearly 12%), nitrogen (nearly 0.6%), calcium (0.24%) and phosphorus (0.14%). Calcium is on the list as it is essential for our skeleton, which contains 99% of the calcium in our body.
3.Our world is made of elements and combinations of elements called compounds. An element is a pure substance made of atoms that are all of the same type. At present, 116 elements are known, and only about 90 of these occur naturally.
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