Biomolecules early formation

Protein biomolecules consisting of polypeptide chain with large molecular mass Protostar early stage in the formation of a star when gases and dust start to contract due to gravitational forces P-V Work work associated with the expansion or compression of a gas Pyrethroids synthetic forms of pyrethrins, insecticides based on extracts from chrysanthemums... 

FIGURE 1.3 Formation of biomolecules on the early Earth. Conditions on early Earth would have been inhospitable for most of today s life. Very little or no oxygen (O ) existed. Volcanoes erupted, spewing gases, and violent thunderstorms produced torrential rainfall that covered the Earth. The green arrow indicates the formation of biomolecules from simple precursors. 

---