End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
https://parzfarhangifile.pdf-doc.ir/file/56084/طرح-درس-و-روش-تدریس-علوم-سوم-درس5-آب-مادهی-با-ارزش