Answer:
In essence, the nebular theory holds that __________.
our solar system formed from the collapse of an interstellar cloud of gas and dust
Explanation:
hope it helps
The correct answer is C) Seafloor spreading
This new oceanic crust is gradually moved away from the ridge itself. Seafloor spreading is one of the reasons of the continental drift
"The Silurian is a geologic period and system spanning 24.6 million years from the end of the Ordovician Period, at 443.8 million years ago, to the beginning of the Devonian Period, 419.2 Mya.<span> <span>Wikipedia."
https://www.google.com/search?q=He+Silurian+period+occurred&rlz=1C1RUCY_enUS760US760&oq=He+Silurian+...
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Some countries trash rivers which sometimes can end in the ocean because they are connected.
