Which of the following societal decisions might result from the ecocide hypothesis about Easter Island? Forests must be saved. Policies and practices must be put into place to manage resources wisely. Efforts must be taken to minimize climate changes. Regulations must prevent nonnative species from being introduced to the environment.

Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 10.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.90 m/s; (b) he is then lifted at the constant speed of 4.90 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 68.0 kg rescue by the force lifting him during each stage?