A is the correct answer because paleomagnetism is the record of Earth's strength and direction in it's magnetic field. It helps us in the knowledge of evolution.
good luck!!
Brainliest if i was helpful
Measure the amount of chemical used, measure the mass before and after
Is this a question? I’m pretty sure this is not one
Explanation:
Plasma
White blood cells
Red blood cells
from top to base of test tube