Answer:
The warming of Earth, accompanied by the seas covering the land, created the proper conditions for multicellular organisms to form.
Explanation:
The environment was a tropical ocean
- 24 micron m^2 represents the value of the surface area.
- Surface area has unit of m^2.
<u>Answer:</u>
<u>surface area</u>
Hope you could understand.
If you have any query, feel free to ask.
