Identify all biological elements + purpose + Abundant or Trace?

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Perfection Ace
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#1
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My biology hw is so haaaaaard, it says identify all biological elements in biology and state their purpose as well as if they are needed a lot or are trace? So far I have only found Carbon, Oxygen, Hydrogen, Nitrogen, Sulfur, Phosphor and Iodine? Can someone help please
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anonymous158
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Magnesium in chlorophyll


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Cluster1
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Carbon(18%) in carbohydrates and proteins
Hydrogen(10%), oxygen(65%) in carbohydrates, proteins and water
Nitrogen(3%) in proteins
Calcium (2%) constituent of bones, teeth and needed for blood clotting
Phosphorus(1%) forms part of ATP and some lipids
Potassium(0.35%) needed for nerve impulses as it maintains electrical gradients
Sulphur(0.25%) constituent of some amino acids


There are more functions but these are the main ones


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