Text: its importance is not only as a source for learning and reference but also as a collection of attractive open questions.

Correct capitalization: Its importance is not only as a source for learning and reference but also as a collection of attractive open questions.

Text: protects eyes and face from radiation when welding.

Correct capitalization: Protects eyes and face from radiation when welding.

Text: features:stainless steel case stainless steel bracelet quartz movement mineral glass blue dial square shape silver-tone hands and markers regular timekeeping 3-hand analog accuracy: +/-20 seconds per month one-touch 3-fold clasp water resistance approximate size of...

Correct capitalization: Features:Stainless Steel Case Stainless Steel Bracelet Quartz Movement Mineral Glass Blue Dial Square Shape Silver-Tone Hands And Markers Regular Timekeeping 3-Hand Analog Accuracy: +/-20 Seconds Per Month One-Touch 3-Fold Clasp Water Resistance Approximate Size of...

Text: the black guillemots, normally having around 10 nest at the landingplace, have this year maybe 5.

Correct capitalization:
The black guillemots, normally having around 10 nest at the Landingplace, have this year maybe 5.