No, but it is known that old/sick prey is much easier to catch. The evidence is that, say, there's no old and sick prey. The predator has to eat regardless, and whatever is there for it to take, it will. Think of a lion and a zebra, and the zebra is eating grass in the middle of a field. The lion is going to take that chance.
The abiotic factor with the least effect is SHAPE OF ROCK IN THE CAVE. The shape of rock in the cave does not impart any influence whatsoever under the survival of the organisms that are living inside the cave. Abiotic factors that have effects in this case include: amount of energy in the cave, amount of oxygen in the cave and the availability of moisture. These are the things the organisms need to survive.
Answer: China and Brazil both use hydropower and are both two of the top countries in the world using renewable energies to power their nations.
Explanation: With china in first place and brazil in third, these two countries are among the top three nations who produce the most renewable energy, and they do this primarily with hydropower which harnesses energy from water currents and converts it into electricity.
I believe that it would be a solar system. I hope this helps!:)
Please add some context next time.