carbon dioxide. All organisms release carbon dioxide.
They use their gills to breathe under water.
No, saltwater bullheads are fish that require water to breathe using their gills. They do not have the ability to breathe out of water like some other species of fish.
Fish breathe through their gills, extracting dissolved oxygen from water. This process is possible due to the fish having specialized structures in their gills called lamellae, which increase the surface area for gas exchange. The oxygen in water is in the form of a solution, specifically a solution of oxygen gas in water.
Oxygen.
the lungfish
Most fish do... unlike the betta fish they can breathe water and air. Dolphins and whales are an example of ones that breathe only air. Sharks, gold fish and other fish have to breathe water.
Fish have evolved to breathe in the water.
Fish breathe underwater using their gills. As water passes over their gills, oxygen is absorbed from the water and carbon dioxide is released. This process allows fish to extract oxygen from the water and breathe efficiently.
Because fish have gills, and breathe water- and I cant!
No, they are fish and must be in the ocean to breathe.
Carbonated water is an example of gas dissolved in liquid. Also, oxygen in water (what fish breathe). Fog is an example of a colloid (arguably a suspension) in which water is suspended in a gas. It is not actually dissolved.
they have gills