The reference point = a object used for comparison to determine if something is in motion.
An object is in motion if it changes position relative to a reference point.
You assume that the reference point is stationary, or not moving.
Answer: if choice D is a virus , then its an exception to the cell theory
Answer:
as the field of science, biology help as to understand the living world and the ways it's many species
Vapor is your answer my friend
I hope this helps
I think the correct answer would be D. In the process of petrification, a tree burning is not included. Petrification is a process that involves organic materials turning into fossils by replacing the original contents of a certain object with minerals.
