I believe it is balanced forces!
X-Ray used to Take images of teeth and bones.
Ultraviolet night vision goggle
If that ratio says 1:3 (it says 13 but i’m assuming you meant 1:3) then it would be B-22,920 because 5730+5730= 11460 and 11460+11460= 22920
Answer:
secondary because the don't only eat plant and can be eaten