One of the most important sources of energy is the sun. The energy of the sun is the original source of most of the energy found on earth. We get solar heat energy from the sun, and sunlight can also be used to produce electricity from solar (photovoltaic) cells
1) Renewable energy
energy from a source that is not depleted when used, such as wind or solar power
2) non renewable energy
A non-renewable resource is a natural resource that cannot be readily replaced by natural means at a pace quick enough to keep up with consumption

Answer:
The major international event did the fall of the Berlin Wall precipitate was "The cold war".
About the cold war:
By November 9th, in the year 1989, the Cold War started to fuse over Eastern Europe, the representative for East Berlin's Communist Party declared a development in his city's relationships with the West. Beginning at night that day, he told, residents of the GDR were unengaged to pass the country's borders. Orwell recognized it as a nuclear deadlock between “super-states”: each maintained defenses of mass extinction and was able of destroying the other. The Cold War competition among the U.S and the Soviet Union continued for decades and ended in anti-communist mistrusts.
(1) If a will has been lost or destroyed under circumstances such that the loss or destruction does not have the effect of revoking the will, the court may take proof of the execution and validity of the will and establish it, notice to all persons interested having been first given. The proof must be reduced to writing and signed by any witnesses who have testified as to the execution and validity, and must be filed with the clerk of the court.
(2) The provisions of a lost or destroyed will must be proved by clear, cogent, and convincing evidence, consisting at least in part of a witness to either its contents or the authenticity of a copy of the will.
(3) When a lost or destroyed will is established under subsections (1) and (2) of this section, its provisions must be distinctly stated in the judgment establishing it, and the judgment must be recorded as wills are required to be recorded. A personal representative may be appointed by the court in the same manner as is herein provided with reference to original wills presented to the court for probate.
Answer:
C
Explanation:
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Formal operational stage,,,,,,starts at 12 years old