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Fertilization is the fusing of the gametes; a sperm cell and an ovum (egg cell) fuse to form a single-cell zygote.This is the beginning of the diploid phase of the human life cycle after two genetically unique haploid cells created via meiosis and chromosomal translocation combine their DNA and begin to develop into a multi-cellular organism.
The first truly international trade routes were around the spice trade through the Roman and medieval periods. [464] Early human economies were more likely to be based around gift giving instead of a bartering system. [465] Early money consisted of commodities; the oldest being in the form of cattle and the most widely used being cowrie shells ...
A person is recognized by law as such, not because they are human, but because rights and duties are ascribed to them. The person is the legal subject or substance of which the rights and duties are attributes. An individual human being considered to be having such attributes is what lawyers call a "natural person". [26]
Article 29 also protects the right to develop one's personality: "[e]veryone has duties to the community in which alone the free and full development of his personality is possible." Manuc explains that personality rights can be defined as those expressing the quintessence of the human person, and are intrinsic to being human. [15]
In biology, the question of the individual is related to the definition of an organism, which is an important question in biology and the philosophy of biology, despite there having been little work devoted explicitly to this question. [3] An individual organism is not the only kind of individual that is considered as a "unit of selection". [3]
Philosophy in classical Greece is the ultimate origin of the Western conception of the nature of things. [8]According to Aristotle, the philosophical study of human nature itself originated with Socrates, who turned philosophy from study of the heavens to study of the human things. [13]
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Security of the person is a basic entitlement guaranteed by the Universal Declaration of Human Rights, adopted by the United Nations in 1948. It is also a human right explicitly defined and guaranteed by the European Convention on Human Rights, the Constitution of Canada, the Constitution of South Africa and other laws around the world.