question: the black guillemots, normally having around 10 nest at the landingplace, have this year maybe 5.
Capitalize this past sentence correctly.
A: The black guillemots, normally having around 10 nest at the Landingplace, have this year maybe 5.

question: not least because the widespread use of diuretics contribute to the lack of magnesium by excreting magnesium via the kidneys.
Capitalize this past sentence correctly.
A: Not least because the widespread use of diuretics contribute to the lack of magnesium by excreting magnesium via the kidneys.

question: hi, my name is arabella69 and i am 19 years.
Capitalize this past sentence correctly.
A: Hi, my name is Arabella69 and I am 19 years.