Radiometric dating assignment answers

The English adjective human is a Middle English loanword from Old French The native English term man can refer to the species generally (a synonym for humanity) as well as to human males, or individuals of either sex (though this latter form is less common in contemporary English).

The genus Homo evolved and diverged from other hominins in Africa, after the human clade split from the chimpanzee lineage of the hominids (great apes) branch of the primates.

The previously clear boundary between humans and apes has blurred, resulting in now acknowledging the hominids as encompassing multiple species, and Homo and close relatives since the split from chimpanzees as the only hominins.

There is also a distinction between anatomically modern humans and Archaic Homo sapiens, the earliest fossil members of the species.

Modern humans, defined as the species Homo sapiens or specifically to the single extant subspecies Homo sapiens sapiens, proceeded to colonize all the continents and larger islands, arriving in Eurasia 125,000–60,000 years ago, By using the technique called a molecular clock which estimates the time required for the number of divergent mutations to accumulate between two lineages, the approximate date for the split between lineages can be calculated.

The gibbons (family Hylobatidae) and orangutans (genus Pongo) were the first groups to split from the line leading to the humans, then gorillas (genus Gorilla) followed by the chimpanzees (genus Pan).

Social interactions between humans have established an extremely wide variety of values, social norms, and rituals, which together form the basis of human society.

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The spread of humans and their large and increasing population has had a profound impact on large areas of the environment and millions of native species worldwide.

Through presentation and discussion of individual ideas, the class reached agreements as to the best way to complete each of the prompts.

STENO'S LAWS Before scientists had modern technology to assist them in their research, they had to use their power of observation to infer the relative ages of the rocks they were studying.

It is also possible that any one of the three is an ancestor of another branch of African apes, or is an ancestor shared between hominins and other African Hominoidea (apes). Bipedalism is the basic adaption of the hominin line, and it is considered the main cause behind a suite of skeletal changes shared by all bipedal hominins.

The question of the relation between these early fossil species and the hominin lineage is still to be resolved. The earliest bipedal hominin is considered to be either Sahelanthropus There are several theories of the adaptational value of bipedalism.

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