"The existence of altruism in nature is at first sight puzzling, because altruistic behaviour reduces the likelihood that an individual will reproduce" More, i

"The existence of altruism in nature is at first sight puzzling, because altruistic behaviour reduces the likelihood that an individual will reproduce" More, in the Altruism in Biology Wikipedia entry: https://en.wikipedia.org/wiki/Altruism_(biology) https://en.wikipedia.org/wiki/Altruism_(biology)