How long has Earth been in its current era? A. 1.8 million years
B. 65 million years
C. 5 billion years
D. 200,000 years

Science A P E X

none of the above its actually 3 million years.

Explanation:

i would say the prokaryotic cells the prokaryotic cells are less complex, are usually found only in unicellular organisms and have more limited capabilities than eukaryotic cells.

answer; hypnagogic sensations)