Humans have found this a very useful material. Drawing this diagram with this piece of is a lovely thing to do because... I drew it with itself. So the tiny... fragments of old marine creatures sitting around in here are now what's stuck to the blackboard making up my drawing of the . So calcium is my favorite element, just because of this cycle.
British physicist
is a British physicist and oceanographer and television presenter. She is an associate professor in the department of mechanical engineering at . She was previously at the Institute for Sound and Vibration Research at the .
From: Wikiquote (CC BY-SA 4.0)
Alternative Names:
H. Czerski
From Wikidata (CC0)
This organism lives, and it dies, and quite often when it dies, the broken fragments... drift down... and... can build up... on the floor of the ocean, and over geological time these beautiful little platelets of calcium carbonate become squashed into rocks of calcium... [A]s techtonic plates move around and seas come and go, those rocks can get lifted up and so this... is what the White Cliffs of Dover are made of...
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