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Lion. The lion ( Panthera leo) is a large cat of the genus Panthera, native to Africa and India. It has a muscular, broad-chested body; a short, rounded head; round ears; and a dark, hairy tuft at the tip of its tail. It is sexually dimorphic; adult male lions are larger than females and have a prominent mane.
As of 2008 there were about 240,000 "lightning strikes incidents" around the world each year. [12] According to National Geographic in 2009, about 2,000 people were killed annually worldwide by lightning. [13] If all eight billion humans have an equal chance of being killed over a 70-year lifespan, this gives a lifetime probability of about 1 ...
Homo sapiens. Linnaeus, 1758. Homo sapiens population density (2005) Humans ( Homo sapiens, meaning "thinking man") or modern humans are the most common and widespread species of primate, and the last surviving species of the genus Homo. They are great apes characterized by their hairlessness, bipedalism, and high intelligence.
Homo habilis ( lit. 'handy man') is an extinct species of archaic human from the Early Pleistocene of East and South Africa about 2.3 million years ago to 1.65 million years ago ( mya ). Upon species description in 1964, H. habilis was highly contested, with many researchers recommending it be synonymised with Australopithecus africanus, the ...
Demographics of the world. Demographics of Earth. Population pyramid of the world in 2022 by the UN. Population. Over 8,120,531,329 (estimated) Fertility rate. 2.27 (2021) Earth has a human population of over 8 billion as of 2024, with an overall population density of 50 people per km 2 (130 per sq. mile). Nearly 60% of the world's population ...
Human biology. Human biology is an interdisciplinary area of academic study that examines humans through the influences and interplay of many diverse fields such as genetics, evolution, physiology, anatomy, epidemiology, anthropology, ecology, nutrition, population genetics, and sociocultural influences. [ 1][ 2] It is closely related to the ...
One Health Model. The concept of One Health is the unity of multiple practices that work together locally, nationally, and globally to help achieve optimal health for people, animals, and the environment. When the people, animals, and environment are put together they make up the One Health Triad .[ 2] The One Health Triad shows how the health ...
It poses the problem of other minds in an especially severe form, because non-human animals, lacking the ability to express human language, cannot tell humans about their experiences. [173] Also, it is difficult to reason objectively about the question, because a denial that an animal is conscious is often taken to imply that it does not feel ...