Please capitalize where necessary: because of aging, the vitreous gradually shrinks, the immune system may response to protect the retina - this may cause the fibrous membrane to grow.
A: Because of aging, the vitreous gradually shrinks, the immune system may response to protect the retina - this may cause the fibrous membrane to grow.

Q: source for width voltage led wall washer ip65 led wall washer light,lww2 manufacturers at zhongshan karnar lighting & electron factory.

A: Source for width voltage led wall washer ip65 led wall washer light,lww2 manufacturers at zhongshan karnar lighting & electron factory.

Q: with the genetic examinations the following questions are hoped to be answered:
A: With the genetic examinations the following questions are hoped to be answered:

Problem: these were quanities such as the number of items produced, the quantity of labor used, the quantity of raw materials used, etc.
Can you repeat this sentence, but capitalize it?
Answer: These were quanities such as the number of items produced, the quantity of labor used, the quantity of raw materials used, etc.

Text: lift your heel and push upward till you stand on your toes.

Correct capitalization: Lift your heel and push upward till you stand on your toes.

Problem: the discs leave a clearly visible mark for following operations and can be adjusted for position and cultivation effect.
Can you repeat this sentence, but capitalize it?
Answer:
The discs leave a clearly visible mark for following operations and can be adjusted for position and cultivation effect.