They only have one respriatory system and it is similar to humans. They breath oxygen from ther air with their lungs. When they are underwater they simply hold their breath (and can do so for a very long time). They do not breath water with gills like fish.
They make nests out of water and sleep there. They can eat on land or water. they spend most of the day in water. They breathe via a respiratory system.
a frog can be classified having gills and lungs tadpoles have gills while frogs[or adult]have lungs
Sea lions breathe air through their nostrils when they are on land. However, unlike most land living mammals, they are 'voluntary breathers'. They do not breathe unconsciously as we do. When they dive into the water, their nostrils automatically close, and they hold their breath. They dramatically reduce their heart rate when they dive to help conserve oxygen and stay under water as long as possible.
The crocodile is, but tortoises prefer dry land.
Crocodiles abide in both land and water. They are most effective at hunting and moving in water, but are deceivingly quick on land
Alligator/Crocodile
Because when mammals breathe (Respiratory) it causes their blood to circulate (Circulatory) ad they need their blood to circulate to live. Hope this was helpful. :)
They make nests out of water and sleep there. They can eat on land or water. they spend most of the day in water. They breathe via a respiratory system.
a frog can be classified having gills and lungs tadpoles have gills while frogs[or adult]have lungs
Fish breath little air particles in the water and kills separate the water from the air in the water but the air is not air that humans can breath its too thin
Thepneumostome (or breathing pore) is a feature (the respiratory opening) of the external body anatomy of an air-breathing land slug or land snail. It is a part of respiratory system of gastropods.
Sea lions breathe air through their nostrils when they are on land. However, unlike most land living mammals, they are 'voluntary breathers'. They do not breathe unconsciously as we do. When they dive into the water, their nostrils automatically close, and they hold their breath. They dramatically reduce their heart rate when they dive to help conserve oxygen and stay under water as long as possible.
A crocodile will build her nest on land near the water's edge and lay her eggs there.
The crocodile is, but tortoises prefer dry land.
Crocodiles abide in both land and water. They are most effective at hunting and moving in water, but are deceivingly quick on land
both land and water
both land and water