Most apparent acts of altruism in the animal kingdom have proved, on closer inspection, to be not truly altruistic. Instead, they have evolved as a consequence of either or .

Kin selection or reciprocal altruism

Explanation:

reciprocal altruism is an organism that acts to temporarily reduce its fitness by increasing the fitness of another organism, with the expectation that other organisms will do the same. In Kin Relative selection is the place where a close relative of an organism protects related species

It should be at the center of any map going vertically: the prime meridian, as it passes through greenwich,  england, is considered 0 degrees longitude