Answer:
Jurassic
Explanation:
There are six periods in the Paleozoic Era: Cambrian, Ordovician, Silurian, Devonian, Carboniferous (alternatively subdivided into the Mississippian Period and the Pennsylvanian Period), and the Permian
Explanation:
What would a biologist see if she examined a small piece of a leaf from a plant and a small piece of a root from the same plant through a microscope? Both the leaf and the root would be made up of cells. The leaf would be made up of cells, but the root would not be made up of cells.
Answer:
Scientific theories are still to be proven while as scientific laws are already proven.
Hi Alex,
I think your answer is (<span>a seafloor that was geologically active with earthquakes, volcanoes, and mountain chains) Good luck!
:)</span>
The branch of medicine that deals with the use of radioactive substances in research, diagnosis, and treatment.
