Fluorine is an important trace bio-essential element.Its deficiency or excess related to geological setting can cause organism distortion or supersession abnormality.
The auth or suggests that prebiological informational structures,gene predecessors and protoorganisms should be looked for among abiogenic ordered hydrocarbon molecul ar systems(hard bitumens).
It is thought that greenockite is a seconday (supergenic) mineral, but there has been found primary greenockite in the Niujiaotang cadmium-zinc deposit in Guizhou.
The endemic fluorosis is a kind of endemia widely distributed in Ningxia, and this is strongly related to the special natural geochemical environment of Ningxia.
The grow progress of bulb is divided to 5 stages: probulb idiophase, probulb enlargement stage, primarybulb idiophase, bulb weight fast gain stage and bulb plenum stage.
Under conditions of food shortage or other stresses, they come together to form a slug-like aggregation of maebas called a pseudoplasmodium, which acts like an individual organism.