for example, fish: fish actually breathe water but they don't breathe it like humans do it just passes through their gills and i think water also has some oxygen in it.
Mammals need oxygen to breathe. Oxygen is a gas that is in the air. Without oxygen, mammals cannot live long.
Mammals inhale oxygen and exhale carbon dioxide, as do all animals.
For food and, like all mammals, for the oxygen they produce world wide.
The absorb the nutrient from your body and transport blood and oxygen.
Animals, including mammals, birds, reptiles, amphibians, and fish, breathe in oxygen and exhale carbon dioxide as part of the process of cellular respiration to generate energy.
Both. Humans are animals in the order Mammalia. All mammals are animals, but not all animals are mammals.
We are mammals, and mammals are one category of animal, so we are both animals and mammals.
All mammals obtain their oxygen from the air.
All except for aquatic mammals such as dolphins and whales and reptiles such as snakes and turtles.
No, all sea animals are not mammals. Fishes are not mammals, but dolphins are mammals.
Most get it from the dissolved oxygen in the water through their gills. Others, such as sea mammals, dolphins etc, need to surface to breathe
Animals, specifically mammals, certainly require oxygen to survive. Most animals require water vapour and carbon dioxide as well.