Answer:
A researcher discovers a fossil of what appears to be one of the oldest-known multicellular organisms. The researcher could estimate the age of this fossil based on <em>the amount of uranium-238 in volcanic layers surrounding the fossil.</em>
C. they created the globe after they realized it was round
Answer:
The cell was first discovered by Robert Hooke in 1665 using a microscope. The first cell theory is credited to the work of Theodor Schwann and Matthias Jakob Schleiden in the 1830s.
D. Mass consumption
is the answer