The longest day of the year isn't the hottest day of the year because the phenomenon of the hottest weather following the summer solstice by a month or two is called the lag of seasons.
Answer:
Group 1 of frogs.
Explanation:
It is the first thing because you have to note which of the frogs you're talking about before you start.
Their skin is thin so they're prone to drying out and they cannot hold moisture in their bodies(Waterproof skin)