Text: another limitation is that most of the exposure information is on fine particles (pm2.5), or the sum of fine and coarse particles (pm10), whereas the information on ultrafine particles is limited.

Correct capitalization: Another limitation is that most of the exposure information is on fine particles (PM2.5), or the sum of fine and coarse particles (PM10), whereas the information on ultrafine particles is limited.

Text: first, download the software from the website and install it to your computer desktop or laptop

Correct capitalization: First, download the software from the website and install it to your computer desktop or laptop

Text: with free wi-fi, this dublin b&b is located in the hip rathmines neighbourhood right next to a tram stop which...

Correct capitalization: With free Wi-Fi, this Dublin B&B is located in the hip Rathmines neighbourhood right next to a tram stop which...

Text: here are idyllic hotel, bungalows and even an airport.

Correct capitalization:
Here are idyllic hotel, bungalows and even an airport.