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Calcium
"Calcium" in a Sentence (12 examples)
Calcium is absent from his diet.
Beryllium, magnesium, calcium, strontium, barium and radium are alkaline earth metals.
Spinach is a rich source of iron and calcium.
When choosing mineral water, we should prefer water that is rich in calcium and magnesium, but low in sodium.
Natural mineral water contains calcium, magnesium, sodium, potassium as well as nitrate.
Calcium is not an alkali metal.
Milk is a good source of calcium.
Most structures that we call "coral" are, in fact, made up of hundreds to thousands of tiny coral creatures called polyps. Each soft-bodied polyp—most no thicker than a nickel—secretes a hard outer skeleton of limestone (calcium carbonate) that attaches either to rock or the dead skeletons of other polyps.
Decreases in carbonate ions can make building and maintaining shells and other calcium carbonate structures difficult for calcifying organisms such as oysters, clams, sea urchins, shallow water corals, deep sea corals, and calcareous plankton.
Calcium is a chemical element with the symbol Ca.
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Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis:[…]. The evolutionary precursor of photosynthesis is still under debate, and a new study sheds light. The critical component of the photosynthetic system is the “water-oxidizing complex”, made up of manganese atoms and a calcium atom.
“This material has a specific hardness and is chemically very stable. It forms naturally from calcium alone, but bacteria accelerate the transformation into calcium carbonate,” explains Alejandro Montesinos, head of the Decarbonization, Climate Change, and Circular Economy Research Group at Tec de Monterrey and a member of the Institute of Advanced Materials and Sustainable Manufacturing.
See also for "calcium"
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Unscramble this word: calcium