What causes tectonic plates to move? A. Heated magma rises to Earth's crust, spreading
it apart and moving each plate
B. Earth's spin causes each tectonic plate to slide
past one another
C. The up and down motion of Earth's tides cause
the plates to move past each other
D. A combination of all of these
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15 points need quick 1. looking at your graph and the geologic time scale during what period did this rock form? what is the age span of the rock, in millions of years? 2. this rock sample is limestone and shale. with what you know about rock formation, what type of environment did these organisms live in? 3. if some of these fossil samples were found in a rock also containing leaf fossils, could you use radiocarbon dating to determine the age of this rock? explain.