What objects then collect the most dew?
Plants collect the most dew.
Of what use is the dew to plants?
It supplies them with moisture, and answers in the place of rain.
When do we have the heaviest dew?
When the air is still and the sky is free from clouds.
Why does wind prevent the deposit of dew?
Because the air in contact with the grass and other objects, is removed so quickly that it does not get cool enough to deposit dew.
Why are dews heaviest when the air is still?
Because the air remains in contact with the grass and other objects, until it is cool enough to deposit the dew.