Depictions of human beings become more prevalent. Testosterone is one of the hormones controlling libido in human beings. They are typically surrogates for humans with ideal human values. Applied psychology applies theory to solve problems in human and animal behavior. Embalming is the practice of delaying decomposition of human and animal remains. The Culture was every single individual human and machine in it, not one thing. A hierarchy of factors for human intelligence is used. Multiple organizations with the goal of helping prevent human extinction exist. There are many different estimates of the number of victims of human trafficking. Cancer has existed for all of human history. She is particularly active in human rights work. This made it the target of criticism from human rights groups. Kanako has some of the same symptoms that are common in human Down syndrome. There are many examples of neuroplasticity in human development. An example is on the study of smoking tobacco on human health.