  Mua, Muah, Muas, Muak all are the equivalent of 'Mwah'. Onomatopeiac word for a kiss, ie on the end of a text message or email.
Bees see the world much differently than people do. A small cluster of tomato blossoms won't catch their attention, but a lawn peppered with clover and dandelions sends then into a pollinating frenzy. If you're serious about attracting bees to your vegetable garden, plant flowers.
The showy outer ray petals help attract the pollinators. Bees go from flower to flower within the disc, becoming covered with pollen. They then pollinate other sunflowers as they go from plant to plant. The success of sunflower as a crop for seeds and oil depends totally on bees.