Earth's crust
Noun
Meaning
the outer layer of the Earth
Source: WordNetSynonyms
Hypernyms
Hyponyms
Examples
Biological effects Due to their sparse distribution in the earth's crust and low aqueous solubility, the lanthanides have a low availability in the biosphere, and are not known to naturally form part of any biological molecules.
Potassium makes up about 2.6% of the weight of the earth's crust and is the seventh most abundant element in the crust.
The earth's crust contains less than 1 part per billion of polonium, making it one of the ten rarest metals on earth.
There are only 5 parts per billion of tellurium in the earth's crust and 15 parts per billion of tellurium in seawater.
In addition, the picroilmenites show little resorption conducive for the preservation of higher quality diamonds surviving their transport from the mantle to surface of the Earth's crust.'