Geodes are formed in a cavity such as might be found inside a fossil shell buried in sediment. At the beginning, this cavity is probably filled with a concentrated salt solution. The first step in the creation of a geode is the formation along the inner cavity wall of a layer of gelatinous silica, which will eventually be transformed into the chalcedony layer. As the water surrounding the layer becomes less salty, osmosis induces migration of fluids into the cavity. This results in a buildup of pressure, causing the cavity to expand until the water inside and outside is equally salty. When the silica gel dehydrates, crystallizes to form chalcedony, and cracks, mineral-bearing water enters to slowly deposit the inward-projecting crystals".
idkk why .?
they were formed when underwater vocaneoes erupted and formed the hawaiin islands
it is formed by a glacier
it cannot be formed
its formed by a occulded front
It was formed by a neighbouring volcano called Chato. The successive eruptions from Chato formed Arenal.
it was formed by being formed
starch is formed by fermentation.
Gulfs are formed by erosion. Gulfs are formed by erosion.
genes are formed when a man and a woman make looove and a baby is formed thefore its genes are formed
The Spice Girls were formed by Chris Herbert.
Magnesium oxide is formed, i think(:
They are formed in meiosis. :)
They are formed by erosion
when was the Himalayas formed?
It did not get formed
The formed province
how was this planet formed