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.
http://rahkar.farafile.ir/file/50141/آزمون-علوم-تجربی-پایه-هفتم-بخش-چهارم-(درس-8-تا-10-)-با-پاسخنامه