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Which statement is true? a. kepler's laws apply only to the motion of earth. b. kepler's laws can be used to predict eclipses. c. kepler's laws are true for a central force that is directly proportional to distance. d. kepler's laws can be deduced from newton's laws of motion and gravity.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

70 give a real life example showing how sensory neurons work with the motor neurons