Birds, reptiles and most amphibians breathe through lungs.
Breathe out. If the air doesn't leave your lungs, it was non removable.
Yes. Dolphins, like whales, are actually mammals. Dolphins and whales breathe air and have to surface eventually.apparently fish like mammals. They nurse their young like all other mammals. They are warm-blooded vertebrates which breathe using lungs, rather than gills, and they suckle their young.Mammalian characters include warm-bloodedness, hair, mammary glands, 7 cervical vertebrae, and non-nucleated red blood cells.However, there are several species of fish called "dolphinfish", which are not mammals. Probably the most famous one is the common dolphinfish, now usually called "mahi-mahi" to avoid just this confusion.The dolphin is a mammal because it (1) has hair, (2) possess 7 cervical vertebrae (3) gives birth to live babies, (4) possess mammary glands for nursing babies.Yes they are, as they have lungs through which they breathe as oppose to gills like fish do. They can hold oxygen in their lungs for long periods of time underwater, but like whales, they have to surface periodically to vent carbon dioxide through their blow-holes and admit fresh oxygen.
Mammals Have Hair Or Fur, Non-Mammals Don't.
Sharks are NOT mammals.
It depends on what you mean by non-mammals. If you are counting all matter as a non-mammal, then most non-mammals are not organisms. If you are counting a non-mammal as any life form or any animal that is not a mammal, then all non-mammals are organisms.
if your talking about what is the difference between mammals and non-mammals, the difference is: the non-mammals lay eggs and the mammals just have baby's out their vagina.. XD
Dolphins are warm blooded mammals that give birth to live young. The shark is a cartilaginous (no spinal bones) fish that either lay eggs or hatch eggs internally. The egg cases of sharks are known as a 'mermaids purse'.
When you breathe in the diaphragm moves down. This increases the volume of the thorax (chest) and lungs, which reduces the pressure of air in the lungs. Air enters when the pressure in the lungs falls below that in the atmosphere. When you breathe out the diaphragm moves up, reducing the volume in the lungs and increasing the pressure. When the pressure in the lungs is greater than that of the atmosphere air leaves the lungs.
mammals can give birth to live young they have hair on their bodies and they can produce milk.
A smoker's lungs look the same as a non-smoker's. Diseased lungs are coloured.
The echidna and the platypus are non-placental mammals. They are monotremes, or egg-laying mammals. Kangaroos, wallabies, koalas, bandicoots, wombats and Tasmanian devils are just a few other non-placentals, as they are marsupials.
All extant mammals have some form of hair. No non-mammals have hair. Mammals have warm-blood. Non-mammals, with the exception of birds, are cold-blooded. Reptiles and birds have scales, but amphibians do not. Sponges do not have hearts or vertebrae. In short, there is not a whole lot that all non-mammals have in common, except the state of not being a mammal.