When you look outside on a cold morning you might see dewdrops on leaves. Which process causes dewdrops to form?

Warm daylight air may absorb water vapour from ther ground or standing water (ponds, lakes, etc). When the cold of the night occurs, the water vapour can't be held by the cooling air. So the water vapour condenses and turns into the water droplets known as dew. So the process is natural condensation. If during a sunny, wintry day, the dew may appear next morning as haw frost, covering everything in ice crystals.