Please capitalize where necessary: iana is the organisation that technically operates the dns root server, delegates ip addresses and top level domains.
A: IANA is the organisation that technically operates the DNS root server, delegates IP addresses and top level domains.

Please capitalize where necessary: morning temperatures will be around 18 °c. during the day they will reach a maximum of 27 °c. low temperatures at night will be around 18°c. we have weak northerly winds.
A: Morning temperatures will be around 18 °C. During the day they will reach a maximum of 27 °C. Low temperatures at night will be around 18°C. We have weak northerly winds.

Please capitalize where necessary: growth forum north jutland has granted half of the sum needed, in all six million danish kroner, to the work of bringing subcontractors together.
A: Growth Forum North Jutland has granted half of the sum needed, in all six million Danish kroner, to the work of bringing subcontractors together.

Please capitalize where necessary: this screensaver will surprise you with pretty graphics including water effect.
A:
This screensaver will surprise you with pretty graphics including water effect.