Answer: c 50% not sure though but its a try
Explanation:
They are used to define periods Geological time.
Answer:
Distal
Explanation:
A finger is distal to the wrist, which is distal to the elbow, which is distal to the shoulder.
The correct answer for this question would be C) At seafloor spreading centers or the third option.
That would be a scanning probe microscope.