Six to seven million years ago Homo sapiens oldest common ancestor roamed the earth, specifically in the north-central region on the continent of Africa. This ancestor is known as Sahelanthropus tchadensis (Tattersall). They are accepted to have common lineage due to their terrestrial bipedalism, forward positioned foramen magnum, the broad and flat facial structure, and the smaller canines separating it from the very similar ape family (Tattersall). Unfortunately the genus Homo has not had much luck with their population sizes considering eight out of nine species belonging to it have gone extinct (Tattersall). This may be why Homo sapiens do so well with population growth; evolution of our genus found the problem and solved it but this problem
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In 1950 the median age of the world’s population was 23, this increased to 28 by the year 2014 (Pew Research Center). It is expected to continue to increase to 37 in the year 2050 because there is more people at the older end of the age spectrum (Pew Research Center). In 2000 there were about 150,000 people aged 100 and older; by 2050 this number is expected to exceed 3 million (Pew Research Center). The final characteristic that plays a role in world population is migration. This one is the hardest to predict simply because it has many factors that could change it like government policies, international events, and natural disasters (Pew Research Center). This is important to because different regions promote different ideologies on reproduction. In china there is a law that states each family may only have one child to prevent there population from continuing to increase since they are the highest populate country in the …show more content…
High food prices and the global economic recession have pushed 100 million more people than last year into chronic hunger and poverty. …Water scarcity is a growing concern. In many parts of the world today, major rivers at various times of the year no longer reach the ocean. In some areas, lakes are going dry and underground water aquifers are being rapidly depleted. And climate change, of course, will make the water situation even more critical. Drier areas will be more prone to drought, wetter areas more prone to flooding, and the summer runoff from snowpack and glaciers will
In 1950 the median age of the world’s population was 23, this increased to 28 by the year 2014 (Pew Research Center). It is expected to continue to increase to 37 in the year 2050 because there is more people at the older end of the age spectrum (Pew Research Center). In 2000 there were about 150,000 people aged 100 and older; by 2050 this number is expected to exceed 3 million (Pew Research Center). The final characteristic that plays a role in world population is migration. This one is the hardest to predict simply because it has many factors that could change it like government policies, international events, and natural disasters (Pew Research Center). This is important to because different regions promote different ideologies on reproduction. In china there is a law that states each family may only have one child to prevent there population from continuing to increase since they are the highest populate country in the …show more content…
High food prices and the global economic recession have pushed 100 million more people than last year into chronic hunger and poverty. …Water scarcity is a growing concern. In many parts of the world today, major rivers at various times of the year no longer reach the ocean. In some areas, lakes are going dry and underground water aquifers are being rapidly depleted. And climate change, of course, will make the water situation even more critical. Drier areas will be more prone to drought, wetter areas more prone to flooding, and the summer runoff from snowpack and glaciers will