Answer:
Hi! The answer is C: Bacteria! <3
Bacteria is a single celled microbe or in other words organism!
Hope this helped, if I was wrong please let me know! :3
These gymnosperms soon became the dominant plants. The Mesozoic is sometimes called the Age of cycads.
But their success was only short-lived. During the mid to late Mesozoic, the first flowering plants or angiosperms appeared.
The mesozoic is <span>Triassic</span>
I have only heard a few phrases for spine
Backbone
Vertebrae (vertebral column)
Spinal column
6:00 Pm is the answer i hope its right