Answer:
Overmier and Seligman have described the phenomenon of learned <u>helplessness</u> as the tendency to feel powerless in the face of events that we can't control.
In 1967, Overmier and Seligman conducted a research, which showed that dogs, once found in an uncontrollable situation such as unavoidable electric shocks, were incapable of escaping a different situation, although there was a possible escape in that situation. The phenomenon of learned helplessness is also commonly experienced by humans who, after repeatedly going through a stressful situation, believe they do not have control over the events. They fail to take any action, even if there is a possible solution.
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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:
Gadsden's Purchase provided the land necessary for a southern transcontinental railroad and attempted to resolve conflicts that lingered after the Mexican-American War .
Answer:
D
Explanation:
Because China’s population is growing since 1900 which shows a change.