When there is not enough oxygen for cells to use cellular respiration<span />
Answer:
Penguins can stay warm in cold arctic waters. It is likely the most result of an organism having lipids in its body since fats , other term for lipids, provides energy and stores it.
The synthesis of diphenylacetylene from mesostilbene dibromide includes next reactions:
• Bromination of stilbene-it is the reaction of electrophilic adition and bromonium ion is formed as intermedier (meso compound is the product).
• Bimolecular elimination-strong base is used in this reaction (takes away the H) and pi bond is formed.
A variation is a reference to the differences or deviations, such as the structure and form, as for crossing over is the exchange of genetic material between the non-sister chromatids of the homologous chromosomes during meiosis.