No. they were all joined together and then they separated
The answer for your question is G2!
It is definitely not a primary source: this would be a book itself.
Now, is it a tertiary source? I don't think so: the author of the review should have read the book and should only be referring to this book in the review.
I think it's a secondary source.
1)Respiration
2)Both
3)Respiration
4)Respiration
5)Respiration
6)Photosynthesis
7)Respiration
8)Photosynthesis
9)Photosynthesis
10)Respiration
11)Photosynthesis
12)Photosynthesis
13)Photosynthesis
14)Respiration
15)Respiration
16)Photosynthesis
B. liquid! Becuase its Seperational atoms have a Huge Attraction within Heated Atoms..from the Sunlight It then sweats..It starts too Evaperate then later by time it Rains.. Etc "Water Cycle" correct me if im Wrong..