Add spaces: DownloadimagesofRohere

Answer: Download images of Ro here

Add spaces: BoatHarbour,TrailerServiceandacharityregatta

Answer: Boat Harbour, Trailer Service and a charity regatta

Add spaces: EC50Medianeffectconcentration,i.e.theconcentrationwhereeffectsareobservedin50%ofthetestanimalshHour(s)

Answer:
EC50 Median effect concentration, i.e. the concentration where effects are observed in 50% of the test animals h Hour(s)