This text is missing some spaces, please add them: Whentheymovetobikeswithmultiplegears,that'swhentheadventuregetsreallyexciting.
When they move to bikes with multiple gears, that's when the adventure gets really exciting.

This text is missing some spaces, please add them: TherearenotmanybooksI'mfastingsoeasilyat,butIthinkthatthisbook,"AflowerinthedesertofAfrica"isworthreading.
There are not many books I'm fasting so easily at, but I think that this book, "A flower in the desert of Africa" is worth reading.

This text is missing some spaces, please add them: Highrelativehumidityreducestheeffectivenessofsweatingincoolingthebodybyreducingtherateofevaporationofmoisturefromtheskin.Ingeneral,higherhumiditymakesclimatehardertostandforpeople.Source:Wikipedia,2015;WMO,2015.
High relative humidity reduces the effectiveness of sweating in cooling the body by reducing the rate of evaporation of moisture from the skin. In general, higher humidity makes climate harder to stand for people. Source: Wikipedia, 2015; WMO, 2015.