Hypocalcemia is a condition due to low calcium levels in the blood.
"For the life of the flesh is in the blood." - Leviticus 17:11
Chlorophyll - Is the life of plants, and the blood of all plants
Hemoglobin - Is the life of animals , and the blood of all animals
And these carriers are needed to carry a large number of nutrients from the earth to the body in order to support the reality of life of earth...
"A fertilizer is a plant nutrient added to a soil to increase its yield. Plants need nutrients to grow and produce fruits and vegetables. Two categories of nutrients have been identified in fertilization: macronutrients and micronutrients. There are only six macronutrients and they are required in large amounts by plants: nitrogen, phosphorus, potassium, sulfur, magnesium, and calcium. However, a larger number of micronutrients are required but in trace amounts: iron, manganese, boron, zinc, copper, molybdenum, chlorine, cobalt, nickel, sodium, and silicon. Eliminate any of these elements, and plants will display abnormal growth and deficiency, or they may not reproduce." -
Fertilizer - Chemistry Encyclopedia - water, elements, proteins, number