The correct answer is: 100x.
The calculation of total magnification of the microscope includes multiplying the magnification of the lenses together, So, to calculate the total magnification take the power of the objective (10X) and multiply by the power of the eyepiece, ocular lens (10X).
The Earth Is billions of years old and Earth is much more different now than it was then.
The answer is Environmental issues.
Answer:
your answer is C I'm positive