A snake breathes through its nose, since they have lungs. Even fully aquatic species need to come up for air.
Yes.
into the skin
Yes, out of its nose or mouth.
oxygen trransfer
Yes, snakes need oxygen from the air just like any other land animal.
No, a snakes skin is impervious to air. Snakes breath using lungs which are inside their bodies with nostrils at the front of their heads.
Blue jays and snakes, like all vertebrates, have hemoglobin in their blood to efficiently transport oxygen from the lungs to the body's tissues and facilitate the removal of carbon dioxide. Hemoglobin binds to oxygen in the lungs, allowing it to be delivered to cells for metabolism. In reptiles like snakes, hemoglobin also plays a crucial role in adapting to varying oxygen levels in their often low-oxygen environments. Overall, hemoglobin is essential for maintaining cellular respiration and overall metabolic functions in these animals.
All sea snakes must rise to the surface to breathe occasionally, although some can remain underwater for long periods by absorbing oxygen from swallowed water.
Snakes do not breathe carbon dioxide; instead, they inhale oxygen and exhale carbon dioxide like most other animals. Snakes use their lungs to exchange gases during respiration.
One of the main differences is in their skin. Snakes have scales which overlap and are connected to each other by small pieces of skin, while amphibians have a uniform layer of semi-permeable skin though which they can absorb oxygen. Amphibians have eye-lids but snakes don't
All kinds of fish and squids. Also, some sea snakes.
Snakes primarily rely on aerobic respiration to meet their oxygen needs, but they can also engage in anaerobic respiration during intense activity or when oxygen is scarce. In anaerobic conditions, they metabolize glucose to produce energy without oxygen, resulting in the formation of lactic acid as a byproduct. This process allows them to sustain brief bursts of activity, such as when hunting or escaping predators, although it is less efficient and can lead to muscle fatigue. However, snakes generally prefer aerobic respiration for their energy needs under normal circumstances.