yes
Humans use lungs only, Frogs can "breathe" through their thin moist skin, through gills, and lungs
Earthworms respire and take in oxygen directly from the skin and releases co2 from the skin as well.It has no vascular system so it gets all it's oxygen through diffusion through it's skin if that's what you mean. In other terms its individual cells respire just as any other animal cells would.
Because they breathe through their gills.
An earthworm could only eat a somewhat decomposed three leaf clover having remnants imbedded in the soil through which the earthworm burrows.
yess
The condition of only being able to breathe through one nostril is called nasal congestion or nasal obstruction.
They don't. Polar bears cannot breathe under water.
No, we do not only breathe through one nostril. The nasal cycle causes airflow to alternate between the two nostrils throughout the day.
If you can only breathe through one nostril, it could be due to a common condition called nasal congestion, which can be caused by allergies, a cold, or a deviated septum. This can make it difficult to breathe through both nostrils evenly.
Whales can't Breathe through their mouths, only their blowholes
No, they can breathe through their mouths, too. If you play with a cat for a really long time, sometimes they start panting, just like dogs.
Humpback whales breathe air by using their lungs. They can only breathe in when their blowhole is above the surface of the water. When they exhale, you can see a spout of warm moist air shoot upwards from their blowhole.