It may be because they are heliotropic, meaning they turn towards the sun as it goes through its course in the sky.
Because they're big and yellow and they lean in the direction of the sun.
The leaf of a flower uses the sun to produce food for the flower. This is called photosynthesis.
Grass and Sun!
Sun + grass = flower & sun + flower = sunflower
put sun then flower
Flower + Sun
Sun + Flower = Sunflower
des tournesols, also called familiarly 'soleils'
Safflower is called "మత్స్యకుర" (Matsyakura) in Telugu.
does sun flower seeds make you
just mix flower and sun