car riding to the snowy siberia, sunny summery caucasus, autumnal petersburg or spring moscow will be one of the most exciting journeys of your life!

How would the previous sentence be correctly capitalized?
Answer: Car riding to the snowy Siberia, sunny summery Caucasus, autumnal Petersburg or spring Moscow will be one of the most exciting journeys of your life!
recent research has revealed that too much omega-6 in the diet creates an imbalance that can interfere with production of important prostaglandins.34 this disruption can result in increased tendency to form blood clots, inflammation, high blood pressure, irritation of the digestive tract, depressed immune function, sterility, cell proliferation, cancer and weight gain.35

How would the previous sentence be correctly capitalized?
Answer: Recent research has revealed that too much omega-6 in the diet creates an imbalance that can interfere with production of important prostaglandins.34 This disruption can result in increased tendency to form blood clots, inflammation, high blood pressure, irritation of the digestive tract, depressed immune function, sterility, cell proliferation, cancer and weight gain.35
this programme can be used to abdomen/back exercises on an exercise ball.

How would the previous sentence be correctly capitalized?
Answer: This programme can be used to abdomen/back exercises on an exercise ball.
the biggest problem i had was when the gearbox was wrapped up, and it cost a lot to say it right - and more annoying saying i discovered there is a common mistake on this car.

How would the previous sentence be correctly capitalized?
Answer: The biggest problem I had was when the gearbox was wrapped up, and it cost a lot to say it right - and more annoying saying I discovered there is a common mistake on this car.