Answer:
???
Explanation:
i would help answer but your post has no diagrams or at least there not showing up
Fossils are fundamental to the geologic time scale. The names of most of the eons and eras end in zoic, because these time intervals are often recognized on the basis of animal life. Rocks formed during the Proterozoic Eon may have fossils of relative simple organisms, such as bacteria, algae, and wormlike animals
H.
represents hydrogen element. under non metal classification.
for others, you'll find them under metal element classification.
