Calcium vs Phosphowalpurgite - What's the difference?
calcium | phosphowalpurgite |
A chemical element, atomic number 20, that is an alkaline earth metal and occurs naturally as carbonate in limestone and as silicate in many rocks.
* {{quote-magazine, year=2013, month=September-October, author=
, magazine=(American Scientist), title= (countable) An atom of this element.
(mineralogy) A triclinic-pinacoidal brownish gray mineral containing arsenic, bismuth, calcium, copper, hydrogen, iron, lead, oxygen, phosphorus, silicon, uranium, and vanadium.
As nouns the difference between calcium and phosphowalpurgite
is that calcium is calcium while phosphowalpurgite is (mineralogy) a triclinic-pinacoidal brownish gray mineral containing arsenic, bismuth, calcium, copper, hydrogen, iron, lead, oxygen, phosphorus, silicon, uranium, and vanadium.calcium
English
Noun
(wikipedia calcium) (Symbol'': ''Ca )Katie L. Burke
In the News, passage=Oxygen levels on Earth skyrocketed 2.4 billion years ago, when cyanobacteria evolved photosynthesis: