The conversion of adenosine diphosphate (ADP) to adenosine triphosphate (ATP) is a key reaction in organisms because it allows for later use of ATP as a source of energy.
I believe the correct answer from the choices listed above is the last option. Most of the particles went through the foil, but some were deflected. This<span> proved that atom has mostly empty space,there is positively charged nucleas at the centre of the atom and the electrons revolve round the neucleus at large distances from it in circular orbits.</span>
The correct answer is A. Variation.
The key word in the text is "different." There is a variety of horn sizes among horned animals.
Eliminated Answer Choices:
The answer cannot be B. Overproduction because the text does not give any information about reproducing or populations.
The answer cannot be C. Survival of fit individuals because survival of the fit is related to adaptations and the text does not mention anything about that.
Hope this helps. Good luck! :)
