<span>Geologists generally know the age of a rock by determining the age of the group of rocks, or formation, that it is found in. The age of formations is marked on a geologic calendar known as the geologic time scale. Development of the geologic time scale and dating of formations and rocks relies upon two fundamentally different ways of telling time: relative and absolute.</span>
D). Beliefs are not scientific.
Answer:
D. seafloor spreading
Explanation:
If you explore two oceanic plates at a convergent boundary , you will observe seafloor spreading.
12is the speed of 6 seconds cause the bigger the secs the slower
