not yet, modern means today (thats paraphrased by me) and descendant means a fallowing generation member related by blood (also paraphrased), but put it together and you can figure it out. when will children of todays humans appear?
maybe as soon as tomorrow! maybe in a week or so.
Scientists think that humanoid creatures appeared somewhere around 500,000 years ago.
Lucy, one of the first bipeds (upright walkers), lived about 3.2 million years ago. -- Lucy was a Australopithecus africanus, so she really wasn't a human... The right answer would be more like: 161,000 years ago, with Homo sapien idaltu.
Humans depend entirely on science and research. Science revolves around every move of humans. So, we can't guess in how many ways it is helpful.
There are so many things that have happened in the past 100 years, but here a just a few: modern medicine, the first man on the moon, the first satellite (sputnik) put into orbit, the first jet-engine airplanes, the first atomic bomb, the first hydrogen bomb, armoured tanks, and various forms of other bombs and missiles.
The Cambrian Explosion, a period between about 540 and 530 million years ago when many major animal groups appeared in the fossil record. This is when animals first developed hard shells and skeletons, so they became much more easily fossilised. Nobody is quite sure what caused the Cambrian Explosion, but increased oxygen levels in the air after the melting of a huge ice age around 600 million years ago may have led to an increase in the size of animals in the oceans; in turn they developed skeletons and shells to support their larger bodies. The evolution of predators may have inspired prey animals to develop shells, as well. We do have fossils before the Cambrian Explosion, but these are simple, soft-bodied, small and rare, so the origins of animals are still shrouded in mystery.
No, it has never been tested in humans. If ingested would cause severe ulcers among many other serious symptoms.
two millon years ago
It took humans about 6 years from the start of the project to get to the moon the first time.
Theirs not really a year they developed in many years.
Scientists believe that the earth's atmosphere has been in existence for over 3.5 billion years. This is based on the fossil records that are found which date to so many years.
Coelacanth fish first appear in the fossil record about 410 million years ago.
The first cells appeared about 3 billion years ago. This is based on fossel records (the earth is about 4.5 billion years old)
They traveled to new jersey many years ago-like about 12,000 years ago
The first ancestors of humans, known as hominins, appeared around 6 to 7 million years ago in Africa. These early hominins were bipedal primates that eventually evolved into the diverse species of Homo, including modern humans.
When humans crossed the Bering land bridge into Alaska many thousands of years ago.
4.6 billion years ago the first procaryotic cells were discovered on planet earth
The last of the dinosaurs died out in a mass-extinction that happened 65 million years ago. Modern humans first appeared on earth about 200,000 years ago. So humans appeared about 6,480,000 years (six million, four hundred and eighty thousand years, or 6.48 million years) after the dinosaurs went extinct.
Over 40,000 years ago, the first blowguns began to appear in many different parts of the world.