It is most likely formed underground.
The earth's crust is first thought to have formed around 100 million years after the initial formation of the earth. As such it is likely that there have been earthquakes occurring for approximately 4.4 billion years.
Canyons are mostly formed by rivers.
A rock that contains fossil seashells was most likely formed as a result of sedimentation.
Wind/ in water
No, rock material is constantly recycled on Earth as rock is melted into magma.
The oldest astronomical bodies are likely the stars in the universe, which formed around 13.8 billion years ago. Next are galaxies, which began forming shortly after the Big Bang. Planets, moons, asteroids, and other smaller bodies in our Solar System are relatively younger, with Earth estimated to be around 4.5 billion years old.
There is not believed to be a youngest or an oldest planet. They most likely formed simultaneously.
The world population is the total number of living humans on Earth. As of today, it is estimated to number 7.089 billion by the United States Census Bureau. According to current projections, the global population will reach eight billion by 2030, and will likely reach around nine billion by 2050.
Our planet was formed about four and a half billion years ago, and it is likely that there were mountains from the beginning. The messy process of planetary formation itself, involving the accretion of mass from various smaller bodies, is not likely to produce a perfectly spherical surface.
It is most likely formed underground.
The earth's crust is first thought to have formed around 100 million years after the initial formation of the earth. As such it is likely that there have been earthquakes occurring for approximately 4.4 billion years.
Yes. There are estimated to be at least 100 billion planets in our galaxy alone, some of which seem to be similar to Earth. Given those numbers it seems pretty likely that life would have emerged on planets or moons aside from Earth.
Our earth/moon system coalesced from a disk of material orbiting our sun, coming to near its present size some 4.6 billion years ago. The moon itself most likely formed when a mars sized body struck the nascent earth. The debris form that impact would have formed our moon, orbiting much closer than it now does, within just a few thousand years. There are two major periods of impact events recorded on the lunar surface, one about 4.5 billion years ago, and the second about 3.8 billion years ago. There have been other impacts before and since, just not so many or so pronounced.
2/9
How about 9/10
Yes, in a few billion years.