Final answer:
Karma is a Hindu concept that influences a person's status in life and rebirth. In the Upanishads, karma means that human actions determine the soul's next life form. Samsara is the cycle of death and rebirth, while moksha is the goal of liberation from this cycle.
Step-by-step explanation:
Karma is a Hindu concept that emphasizes the influence of good deeds and moral behavior on a person's status in life and rebirth after death. In the Upanishads, karma evolves to mean the idea that all human actions, moral and immoral, are counted and weighed, ultimately governing whether a person is reborn into a higher or lower life form.
Samsara, on the other hand, refers to the cycle of death and rebirth for a soul, and moksha is the ultimate goal of liberation from samsara and the karmic cycle, achieved through a complete understanding of the world.