Berkelium is an artificial chemical element.
Berkelium is extremely rare, radioactive and unstable; berkelium is not for sale.
8.1% by weight
Water 75%
Berkelium is not a commercial material.
The Earths crust is approximately 650 km deep.
The sudden vibration in the plates inside the crust causes the earths crust to rise & fall.
India is not covering some of the earth's crust but part of the earth's crust is part of India
Berkelium is not a commercial product.
mantle
The earth's crust is not stress
half of earths layer
47 % oxygen & 27% silicon.