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Kidney function as a fliter and it helps in the purification of blood.
Kidney excretes the toxic substance ammonia from the body as urea , uric acid and ammonia .
In human beings and mammals ammoia is excreted as urea and is called Ureotelic.

The higher index of refraction means that violet light is the most bent, and red is then the least bent because of its lower index of refraction, and the other colors fall somewhere in between.

Vitamin D is a fat-soluble vitamin.
There are different forms of vitamin D.

Ergosterol (provitamin D-2). This type is found in plants.
Ergocalciferol (vitamin D-2). This type is also found in plants.
7-dehydrocholesterol. This type is found in animals.
Calciferol (vitamin D-3). This type is formed in the body from exposure to sunlight.

Chemical name of vitamin B2- riboflavin or lactoflavin
The protein that causes the yellow color of milk – carotene
The main protein in milk is casein.
Milk is white due to the presence of casein

Vitamin D is well known as a hormone involved in mineral metabolism and bone growth.
Its most dramatic effect is to facilitate intestinal absorption of calcium, although it also stimulates absorption of phosphate and magnesium ions.
In the absence of vitamin D, dietary calcium is not absorbed at all efficiently.

The smallest cranial nerve is trochlear in human beings.
The trochlear nerve is also known as cranial nerve IV (CN-IV).
It is the only cranial nerve that emerges dorsally from the brain (near the back), giving it the longest pathway.

The Split ring commutator has the function of reversing the current at that point. When a dc motor shaft comes into contact with a split ring, the split ring reverses the current to maintain the shaft torque in a magnetic field.

A transformer is a passive component that transfers electrical energy from one electrical circuit to another circuit, or multiple circuits. … Transformers can also be used for isolation, where the voltage in equals the voltage out, with separate coils not electrically bonded to one another.

There are 2 types of transformer; the conventional wound type and potential transformer.
Large amount of heat is losed when power distributed to large areas in a conductor.It is called power loss.
Step up transformer is used to decrease the output current and increase the out put voltage which is 220v at power station. So power loss can be eliminated. Then the volt is decresed at distribution transformers and 11Kv electricity is produced.

The table showing the image formation by convex mirror is added below

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