It's AumSum Time
Why do birds fly in V formation?
Because V is for Victory.
Flocks of birds like geese, pelicans fly in V formations to make flight easier.
In V formations, when a bird flaps its wings.
The air behind the bird gets pushed downward, creating a downwash.
While the air towards its sides gets pushed upward, creating an upwash.
This produces rotating vortices.
If another bird flies in these upwash zones.
It gets a free lift and glides due to reduced air resistance.
Thus, birds are able to fly long distances.
Without putting much effort and maintaining a clear line of sight.
Besides this, since the bird in the lead faces greater air resistance.
The birds keep changing their positions in the V and take turns as leaders.
This maximizes the use of each bird's energy.
Allowing flocks to fly without having to stop.
Can jellyfish live forever?
To understand this, let us observe the lifecycle of a jellyfish.
A fertilized egg of a jellyfish forms planula.
Planula then attaches itself to a hard surface like a rock or sea floor.
Then, it transforms into a polyp.
Then through a process called budding, tiny jellyfishes emerge from polyp.
Some jellyfishes may live for a few hours.
Some may live for a few months, while some may live for several years.
However, a type of jellyfish known as Turritopsis dohrnii.
Which is also called the immortal jellyfish is said to live forever.
Stop bluffing.
How is that possible?
When immortal jellyfish is injured, stressed or cannot find enough food.
It reverses its lifecycle.
It transforms into a blob like structure called cyst.
Which then transforms into a polyp.
Then, again through budding.
Tiny jellyfishes emerge from polyp, thus making Turritopsis dohrnii immortal.
How do antiperspirants work?
They work overtime and do not even take incentives.
No.
A type of sweat gland called apocrine gland produces sweat.
Which has fats and proteins.
Bacteria on our skin eat these fats and proteins and produce bad odors.
The odor is really gross.
Hence, to mask the odors, we use deodorants or antiperspirants.
Deodorants make environment too acidic or too salty for bacteria to thrive.
Thus, preventing the production of odors.
On the other hand, antiperspirants enter the tube.
Through which the sweat comes onto skin and form a gel like substance.
This gel blocks the tube preventing the sweat from coming onto the skin.
If there is no sweat for the bacteria to eat, then there will be no odor.
However, according to experts.
Some deodorants and antiperspirants contain toxic components.
Hence, we should avoid their excess usage.
Why are some people double jointed?
Because they are aliens.
No.
A joint is an area where two bones meet with the help of ligament.
Joints enable us to bend various body parts to a certain extent.
However, some people can bend their body parts more than normal.
Such characteristic is called joint hypermobility.
It is said hypermobility is because individual has more or double joints.
Which give him extended range of motion.
However, this is incorrect.
Hypermobility in some people is the result of flexible ligaments.
Which enable their body parts to bend more than normal.
Dude.
That really looks creepy.
Besides this, hypermobility can also be seen around ball and socket joints.
Which involve ball shaped end of one bone fitting into indentation on other bone.
The shallower the indentation is, the greater the range of motion.
Thus, giving that individual hypermobility.