<span>Cardiovascular heath</span>
2: D 3: A 4: B 5:A 6:C PLEASE MARK BRAINLIEST!!
Enzymes are sometimes called biological catalysts
It tells you that they descended from a common ancestor.
Answer:
Most amphibians can breathe both through cutaneous respiration (through their skin) and buccal pumping - though some also retain gills as adults. Some aquatic salamanders (and all tadpoles) have gills and can breathe underwater thanks to them. The Mexican axolotl, for example, never loses its gills.
