It is the contrasting fertilization process to internal fertilization as external fertilization takes place outside of the female body where eggs released in surrounding environment of the female and fused with sperms released by the male.
In frogs, the type of fertilization is the external fertilization process where the female frog released her eggs in water and sperm solution covers the eggs and fertilizes them.
Answer: Chemical energy is energy stored in the structure of molecules within the bonds between atoms. Energy can be added or released from a molecule by changing the arrangement of electrons (rearranging chemical bonds).
