<h2>540 million years ago
</h2>
Paleozoic.
Era immediately follows Precambrian It lasted about 4.5 billion years.
When did abundant fossil evidence first appear in the geologic record.
540 million years ago.
Answer: mineral deposits can not be used as an example of fossil
Explanation:in evolution theory, both bones and footprints were used for fossil record
Answer:
proteins is the answer of this question
I have no idea search it up in google
Feldspar and quartz are the correct answers
