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32 relations: Biological life cycle, Biology, Birth control, Birth rate, Demography, Eugene Grebenik, Evolutionary biology, Fecundity selection, Fertilisation, Fertility, Fitness (biology), Gamete, Genetics, Gynaecology, Infertility, Louis Henry, Menstrual cycle, Natalism, Obstetrics, Organism, Parthenogenesis, Population, Population biology, Population ecology, Pregnancy, Regulating factors, Reproduction, Sexual intercourse, Starvation, Sterility (physiology), Ungulate, United Nations Department of Economic and Social Affairs.
Biological life cycle
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of changes in form that an organism undergoes, returning to the starting state.
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Biology
Biology is the natural science that studies life and living organisms, including their physical structure, chemical composition, function, development and evolution.
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Birth control
Birth control, also known as contraception and fertility control, is a method or device used to prevent pregnancy.
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Birth rate
The birth rate (technically, births/population rate) is the total number of live births per 1,000 in a population in a year or period.
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Demography
Demography (from prefix demo- from Ancient Greek δῆμος dēmos meaning "the people", and -graphy from γράφω graphō, implies "writing, description or measurement") is the statistical study of populations, especially human beings.
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Eugene Grebenik
Eugene Grebenik CB, known as "Grebby" (20 July 1919, Kiev – 14 October 2001, Oxford) was a central figure in the development of demography in Britain and the first director of the British Civil Service College.
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Evolutionary biology
Evolutionary biology is the subfield of biology that studies the evolutionary processes that produced the diversity of life on Earth, starting from a single common ancestor.
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Fecundity selection
Fecundity selection, also known as fertility selection, is the fitness advantage resulting from the preference of traits that increase the number of offspring (i.e. fecundity).
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Fertilisation
Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, conception, fecundation, syngamy and impregnation, is the fusion of gametes to initiate the development of a new individual organism.
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Fertility
Fertility is the natural capability to produce offspring.
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Fitness (biology)
Fitness (often denoted w or ω in population genetics models) is the quantitative representation of natural and sexual selection within evolutionary biology.
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Gamete
A gamete (from Ancient Greek γαμετή gamete from gamein "to marry") is a haploid cell that fuses with another haploid cell during fertilization (conception) in organisms that sexually reproduce.
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Genetics
Genetics is the study of genes, genetic variation, and heredity in living organisms.
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Gynaecology
Gynaecology or gynecology (see spelling differences) is the medical practice dealing with the health of the female reproductive systems (vagina, uterus, and ovaries) and the breasts.
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Infertility
Infertility is the inability of a person, animal or plant to reproduce by natural means.
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Louis Henry
Louis Henry (1911 – 1991) was a French historian.
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Menstrual cycle
The menstrual cycle is the regular natural change that occurs in the female reproductive system (specifically the uterus and ovaries) that makes pregnancy possible.
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Natalism
Natalism (also called pronatalism or the pro-birth position) is a belief that promotes reproduction of sentient life.
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Obstetrics
Obstetrics is the field of study concentrated on pregnancy, childbirth, and the postpartum period.
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Organism
In biology, an organism (from Greek: ὀργανισμός, organismos) is any individual entity that exhibits the properties of life.
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Parthenogenesis
Parthenogenesis (from the Greek label + label) is a natural form of asexual reproduction in which growth and development of embryos occur without fertilization.
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Population
In biology, a population is all the organisms of the same group or species, which live in a particular geographical area, and have the capability of interbreeding.
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Population biology
Population biology is an interdisciplinary field combining the areas of ecology and evolutionary biology.
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Population ecology
Population ecology is a sub-field of ecology that deals with the dynamics of species populations and how these populations interact with the environment.
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Pregnancy
Pregnancy, also known as gestation, is the time during which one or more offspring develops inside a woman.
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Regulating factors
In population ecology, a regulating factor is something that keeps a population at equilibrium (neither increasing nor decreasing in size over time).
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Reproduction
Reproduction (or procreation or breeding) is the biological process by which new individual organisms – "offspring" – are produced from their "parents".
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Sexual intercourse
Sexual intercourse (or coitus or copulation) is principally the insertion and thrusting of the penis, usually when erect, into the vagina for sexual pleasure, reproduction, or both.
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Starvation
Starvation is a severe deficiency in caloric energy intake, below the level needed to maintain an organism's life.
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Sterility (physiology)
Sterility is the physiological inability to effect sexual reproduction in a living thing, members of whose kind have been produced sexually.
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Ungulate
Ungulates (pronounced) are any members of a diverse group of primarily large mammals that includes odd-toed ungulates such as horses and rhinoceroses, and even-toed ungulates such as cattle, pigs, giraffes, camels, deer, and hippopotami.
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United Nations Department of Economic and Social Affairs
The United Nations Department of Economic and Social Affairs (UN DESA) is part of the United Nations Secretariat and is responsible for the follow-up to major United Nations Summits and Conferences, as well as services to the United Nations Economic and Social Council and the Second and Third Committees of the United Nations General Assembly.
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References
[1] https://en.wikipedia.org/wiki/Fecundity
