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If we do disappear tomorrow, nearly all tall buildings will fall to the ground in less than 200 years. The ruins of these buildings will remain for several thousand years. Within 75 years the Ecosystem will completely reshape its self. Species pushed to the brink of extinction will flourish, and stable populations will be threatened by the sudden rise in competition and predators. Some area's modified forestry will return to an unaltered state in a very short period of time, where as others will never return to their natural state. Our effects on the environment, such as Co2 emissions will continue to influence nature for as long as 1000 years. In 20 000 years everything from concrete to plastic, buildings to bridges will be 100% wiped from the face of earth.

However, evidence of mankind on the moon will remain for multiple millions of years.

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when did humans first populate the earth?

The exact timing of when humans first populated the earth is uncertain, but it is believed to be around 200,000 years ago. This is based on evidence from archaeological findings of early human ancestors in Africa.


Who the first human that came to the earth?

According to scientific consensus, the first humans, known as Homo sapiens, evolved in Africa around 300,000 years ago. This development marked the beginning of our species' existence on Earth.


Where do the scientist believe the earliest people lived?

Scientists believe that the earliest humans lived in East Africa, particularly in the region known as the Great Rift Valley. Fossil evidence and archaeological discoveries have supported this theory, suggesting that early humans evolved and spread out from this area.


Which answer best describes the most widely held theory about how humans came to populate Earth?

The most widely held theory about how humans came to populate Earth is the Out of Africa theory. This theory suggests that early humans originated in Africa and then migrated to other parts of the world, eventually replacing other hominid species such as Neanderthals. Genetic and fossil evidence support this theory.


What percent of the earth's total history has humans been in existence?

divide the smaller number by the bigger number to get a percentage: age of the earth is 4.54×10^9 give or take a year. that's basically: 4,540,000,000years assuming humans existed for 160,000years 160,000/4,540,000,000=3.52422907×10^-5 basically 0.00003 to turn that into a percentage you move the decimal point to the right two space: .003% THUS: human history accounts for only .003% of earth's entire history.

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To date, fossil evidence shows that humans existed in the Western Hemisphere as far back as 10,000 BC BCE. There is also evidence of tools that also match the fossil remains.


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Descartes argues for the existence of God by proposing that the idea of a perfect being must have originated from a perfect being itself, as imperfect beings like humans cannot conceive of perfection on their own. This leads him to conclude that God, as a perfect being, must exist in order for humans to have the concept of perfection.


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What did the oldest evidence of humans in the canyon now what is it we can see?

Evidence of humans in the Chaco Canyons were small pit houses.