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From the history that is revealed in rock, particularly in fossils and the age of rock as determined by very precise radiometric dating techniques.
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What are scientists who study earth's oceans called?
Scientists who study earth's oceans are called oceanographers.
What can geologists learn about the interior of Earth from rock samples?
Because is gives evidence for the Scientists that want to know more about the past. :)
Explain why its impossible to ever really know the materials compose earth's interior?
Scientists have determined what the interior of the earth is like through analyzing seismic or earthquake wave
How did germs first come to earth?
They didn't come to earth they evolved here
Why is it important for scientists to know the speed of plate tectonics?
It is important so that they can possibly predict future earth movements as to when and where it will happen. Ex: earthquakes
Do scientists know how DNA evolved?
In the theory of how life began, scientists have theorized that DNA evolved through natural selection. The challenge remains to develop a theory to explain how RNA developed from the primordial soup which scientists believe constituted the Earth's surface 3.8 billion years ago. Did evolution start in space, in oceans, salt pans, volcanic exhalatives or in underground cavities?
What do scientists Know about aliens?
they were first on earth
How do scientists know the poles of the earth are moving?
a compass
What animal do scientists think penguins evolved from?
Penguins evolved from birds. :)
Why do scientists on Earth want to know so much about other planets?
We may possibly know how Earth was created.
How did scientists know how old the earth is?
By carbon dating minerals, fossils or objects, in the earth.
Why do scientists believe all life on earth evolved from a single-celled ancestor?
because cells only come from pre-existing cells
Where do scientists believe plants evolved?
They believed plants evolved from prehistoric times.
How do scientists know that planets are closer to earth than the stars?
not a clue
What do scientists think fish evolved from?
ampibians
How do scientists know how old the moon is?
The nMoon was once a part of the Earth, so it is the same age as the earth.
What species of lizard did snakes evolve from?
We do no know exactly what kind of lizard snakes evolved from, but scientists think it was related to monitor lizards.
