The key difference between energy flow and matter cycling is that energy flow shows the energy transmission from one trophic level to next trophic level in food chains while matter cycling shows the flow or cycling of elements through the living and nonliving parts of ecosystems
The correct option is D.
Sexual form of reproduction leads to increased genetic diversity as a result of the two different reproductive cells that are coming together and the biological assortment that occur during the process of cell division. Increased genetic diversity enhance variations among living organisms and increased their potentials to survive in their environments.
The answer is sedimentary rock.
The cyclic adenosine monophoaphate, or the cAMP is a second messanger for multiple biological processes. The glucose, sugar and lipid metabolism is regulated by the cAMP or cyclic adenosine monophosphate. Itis the derivative of the ATP (Adenosine Triphosphate), and used for the purpose of the signal transduction. Besides this, the brain function is also affected by the cAMP.