What is albert einstein’s contribution to the understanding of nuclear energy?

he proposed that matter can be converted to energy and vice versa.
he first discovered that nuclear-reaction products are lighter than the reactants.
he developed the use of nuclear reactions to generate electricity.
he demonstrated that a uranium nucleus splits and releases neutrons.

The first one. It's a statement of E=mc^2

The horse latitudes-high-pressure zones about 30 degrees north and 30 degrees south of the equator.-warm air traveling away from the equator cools and sinks-weather tends to be clear and drythe doldrums-low-pressure near equator-air rises and spreads out toward the poles-rising moist air produces clouds and heavy rainthe westerlies-blow from the west-move from the horse latitudes toward the poles.-bring storms across much of the united statesthe tradewinds-blow from the east-move from the horse latitudes toward the equator  -strong, steady winds