Vertebrates have a back bone. They have living endoskeleton, pharnyx and efficient respiration, advanced nervous system, and paried limbs.
Stomata allows gas exchange throughout the leaf so your answer is carbon dioxide
: D
<span>Nitrazine paper turns blue on contact with the fluid.
Ferning reveals about the complete Microscopic examination of the fluid.
This rupture of the membranes basically means breaking the water which happens before the delivery of the baby. There won't be any danger if the membrane is ruptured which means the bag of water broke.</span>
the Galapagos
While visiting the Galapagos in 1835, British naturalist Charles Darwin observed local plants and animals.
