The development and growth of Wireless Sensor Networks (WSNs) is significantly propelled by advances in Radio Frequency (RF) and Visible Light Communication (VLC) technologies. This paper endeavors to present a comprehensive review of the state-of-the-art in cognitive hybrid RF-VLC systems for WSNs. emphasizing the critical task of seamlessly integrating Cognitive Radio Sensor Network... https://storeanimalwiz.shop/product-category/wildbird-foods/