i dont know.. ask God.
its many things. two of which are an empty sack of potatoes, and an organ inside a fish(aka air bladder)
my sweaty ball sack, thats how it works
it is like a waste sack it takes in extra fluid
they are called alveoli
alveolus
Capillaries
im not sure if they have an extra air sack but if they do its because birds fly very high and they is not much oxygen up where they fly, plus i do know they have a light bone structure.
constant velocity= no acceleration and no net force Assuming that there are no other forces acting on the sack (besides gravity and air resistance) this means that the force of air friction equals the weight of the object, so that the air resistance is 10N acting upward exactly balancing the force of gravity acting down
remove the air sack from the exhaustion tank...nd then place it back in
If you candle them you can see a very small air sack and the old ones have a large one. If you put them in water the fresh eggs sink to the bottom because they don't have much air in them. The old ones float because the air sack is bigger.
The gall bladder is like a sack under the liver, and it stores bile, which is essential for digestion.
The movement of the scrotum, or ball sack, is a natural response to regulate the temperature of the testicles. This movement helps adjust the distance of the testicles from the body to maintain an optimal temperature for sperm production and function.