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How do scientists know that the sun is a million years old?
A million? The age is over 4 billion years.
A colony of bacteria originates from how many bacteria?
All it takes is one bacteria. The cell's divide by binary fission where the microbes DNA splits to form a new cell.
Did sauropods live on earth 300 million years?
No. Sauropods first appeared a little over 200 million years ago and died out about 65 million years ago.
Many of the oldest known fossils most closely resemble which modern organisms?
Wolves have changed some over the past 20 million years, but not by a huge amount. There are fossils of mosquitoes in amber that are remarkably similar to modern mosquitoes, though they are over 200 million years old. Coelacanth is a variety of fish for which modern specimens are somewhat similar to species that lived at the close of the Cretaceous, 65 million years ago. So there are a few creatures that have not changed a whole lot over vast stretches. Horseshoe crabs are yet another example, for which there are specimens over 440 million years old.
Which natural event can occur either over a few weeks or over a few million years?
Which natural event can occur either over a few weeks or over a few million years?
Rates of erosion are not used to date geographical features over a million years old because?
Rates of erosion may greatly vary over a million years.
What is the evidence of life involving over a billion of years?
Fossilized Bacteria
What is the shortest time required for bacteria to double in number?
A common bacteria, E.coli, will multiply very fast. For example, an E.Coli will multiply into over a million bacteria in 8 hours.
How old is Grand Canyon in Arizona?
Over a million years.
How old is a Diplodocus?
They are BILLIONS years of age
How many years did dinosaurs lived?
160 million years
What has happened to the earth's land over the past 425 million years?
the land has separated and some have expanded over the 425 million year span
