Crustaceans obtain oxygen through gills.
you obtain oxygen from your lungs you could breath through your nose and through your mouth
Lungs
No, its just some reptiles that obtain oxygen through their skin. Many of them breath through their lungs.
multicellular organisms obtain their oxygen through the respiratory system
They obtain energy through the air and obtain oxygen through their gills to breath
Hydra cells get oxygen through diffusion.
Lungs, gills and sometimes skin.
Lancelets obtain oxygen through a process called diffusion. They do not have specialized respiratory organs; instead, oxygen diffuses across their thin body walls and into their bloodstream from the water around them. This is made possible by their simple body structure and the high surface area-to-volume ratio of their bodies.
Pterodactyls do not obtain oxygen at this time because they are extinct. While they existed, they probably obtained oxygen in the same way that birds today obtain it through the use of lungs.
Organisms obtain oxygen through respiration, where they take in oxygen from their environment and release carbon dioxide as a waste product. Aquatic organisms such as fish can also extract oxygen from the water through their gills.
Dogs obtain oxygen by breathing in air through their noses and mouths. Oxygen from the air enters their lungs, where it is absorbed by the red blood cells in exchange for carbon dioxide. The oxygenated blood is then pumped through their body to provide energy for their cells.
Amoebas obtain oxygen through diffusion. Oxygen from the surrounding environment diffuses across their cell membrane and into their cytoplasm, where it is used for cellular respiration to generate energy.