yes. dinosaurs are reptiles and no reptile can breathe under water.
They have noses.
They don't breathe, they are all dead!
Through there nose or mouth
Dinosaurs are reptiles, so they breathe O2. Only plants breathe CO2.
with their lungs.
Like all living things, dinosaurs breathe in air (a mixture of different gases), but only the oxygen is used in respiration.
Dinosaurs were all reptiles and therefore, land dwellers. None of them could breathe underwater, although marine creatures that lived along side the dinosaurs have similarities to the dinosaurs, they weren't actually classed as dinosaurs. Therefore, no dinosaurs could breathe under the water :) EDIT Fish and some amphibians are the only vertebrates that have gills and can breath underwater. The same applies to ancient animals too.
The Dressing Room by Breathe Carolina.
The atmosphere is mostly recycled. So yes, the air we breathe probably was breathed by dinosaurs, then the carbon dioxide they exhaled was converted to oxygen by plants, and after that cycle repeated itself many times, we are breathing the same air they did.
Snakes appeared about 70 million years ago, just before the dinosaurs died out. Although snakes were huge then, the biggest recorded was 36ft long. Remember, any snake that lives on land that is longer than 50 ft is too big to move and breathe.
HA! there are no genetic mutations! DINOSAURS ARE DINOSAURS! DINOSAURS ARE DINOSAURS! no mutants
Dinosaurs Dinosaurs Dinosaurs - 1985 TV was released on: USA: 1985
There were no marine dinosaurs. Reptiles often thought of as marine dinosaurs were mosasaurs, plesiosaurs, and icthyosaurs. They came to the surface to breathe, and they hunted fish and other sea animals for food.
Platypuses are not dinosaurs; nor are they related to dinosaurs.
Sharks are Sharks and dinosaurs are dinosaurs. But there were animals recognizable as Sharks living when the dinosaurs did.