Answer:Organisms must struggle to get what they need to survive, competing against other organisms that want the same things they do.
Explanation:
Mendel was the first person to succeed in predicting how traits are inherited from generation to generation.
Answer;
B. FAD
NAD can produce more energy than FAD,
Explanation;
NAD and FAD are both electron carriers, that carry electrons to the electron transport chain.
Reduced NAD/FAD are passed to the electron transport chain where hydrogen are removed from the two hydrogen carriers and is split into hydrogen ions and an electron.
Each reduced NAD molecule produces an average of 2.5 molecules of ATP and each reduced FAD produces an average of 1.5 molecules of ATP .