Answer:
Calcium, Iron.
Explanation:
Calcium and Iron
Calcium is an essential nutrients element in man's diet. The requirement of calcium is 1000mg per day but for a pregnant woman more than this is required because of the developing feotus. Calcium helps in bone development, heart and nervous system functioining. When calcium is not available for developing embryo its lead to soft bone formation and Ricket in small children. Calcium can be gotten from green vegetables, fruits such as citrus, milk product such as cheese and yoghurt.
Iron is also an essential nutrients element for pregnant woman its helps in the formation of heamoglobin in red blood cell, Heamoglobin in the red blood cell helps in the transport of oxygen in the body. Hence, when iron is low heamoglobin cannot be formed and oxygen circulation is inhibited. Sources of calcium include meat, egg, liver.
The presence of the base peak at 45 in combination with our knowledge about the nitrogen rule suggests that the peak at m/z 60 is likely the molecular ion because even molecular ions usually produce odd molecular fragments by breaking single bonds.
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The correct answer is Integumentary system.
The integumentary system includes skin and all its appendages (hair, scales, feathers, hooves, and nails) with the function to protect the body. It protects body from damage, from loss of water, from abrasion from outside and even protects the deeper tissues. On the other hand, integumentary system excretes wastes, regulates temperature, provides synthesis of vitamin D and many other things.
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