Please capitalize where necessary: beneath the surface of i-shift, the hallmark of modern transmissions, hides an old-school unsynchronised manual gearbox.
A: Beneath the surface of I-Shift, the hallmark of modern transmissions, hides an old-school unsynchronised manual gearbox.

Q: the smell is the sense we know much about. the brain's limbic system is activated when we smell.

A: The smell is the sense we know much about. The brain's limbic system is activated when we smell.

Q: on october 29, eight days before the election, war came, by obvious predetermination of the moment held most suitable to cause consternation in washington and london.
A: On October 29, eight days before the election, war came, by obvious predetermination of the moment held most suitable to cause consternation in Washington and London.

Problem: is it not a fact that organs that are not used degenerate and perish? if one never used more than one of one's ten fingers, the other nine would inevitably wither and become useless or die.
Can you repeat this sentence, but capitalize it?
Answer: Is it not a fact that organs that are not used degenerate and perish? If one never used more than one of one's ten fingers, the other nine would inevitably wither and become useless or die.

Text: containing by weight 0,25 % or more but less than 0,6 % of carbon 7217 20 50

Correct capitalization: Containing by weight 0,25 % or more but less than 0,6 % of carbon 7217 20 50

Text: when tiny particles float in the air

Correct capitalization:
When tiny particles float in the air