Complex sentence: Atrazine is used to stop pre- and post-emergence broadleaf and grassy weeds in major crops by binding to the plastoquinone-binding protein in photosystem II, inhibiting electron transport.
Split into simpler sentences: Atrazine is used to stop pre- and post-emergence broadleaf and grassy weeds in major crops. It binds to the plastoquinone-binding protein in photosystem II, thus inhibiting electron transport.