I think it’s carbohydrates or protein
It's need to pass oxygen to the blood to the respiratory system work properly I think that the answer
Answer:
embryonic development
Explanation:
other non aquatic vertebrates exhibit gill slits even though they never breathe through gills. These slits are found in the embryos of all vertebrates because they share as common ancestors the fish in which these structures first evolved.
Certain types of rocks form deep inside earth:)
Compare reef and lion population sizes , amount of fish , peaked at 6 , lionfish started to increase population size at round 11 and 12, reef fish started to decrease as lion fish grew .
