<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.
By talking to me ;)))))) lol
Answer:
because if they dident stop it would malfunction
Explanation:
Answer:
d in interstellar gases and stars
Explanation:
Answer:
increased energy is not a symptom of depression
