a preserver means someone who preserves things ex. " I preserved my old antiques for later use "
Firstly look if there was an indoor or monitored ice-skating rink in the local area; if looking for a natural place to ice-skate, ice must be at a temperature of <span>−3.5 °C or lower, for safe skating. You must look for the correct temperature and weather conditions. </span>
I uploaded the answers on the other thing that you posted