Biological molecules: describe question

A biologist is studying a temperate lake. She notes that the water temperature in the lake changes very little between day and night, while the air temperature can vary by more than 10°C. She also observes that many aquatic organisms use water to transport dissolved nutrients, and that some animals like the lake's frogs lose water through their skin to cool themselves. Describe how the properties of water, including its high specific heat capacity, solvent action, and high latent heat of vaporisation, contribute to these observations.