Question

व्हिच ऑफ दिस इज एंड इंटरनेशनल सिस्टम ऑफ कम्युनिकेशन रिटर्न मैसेज थ्रू टेलीफोन लाइन



Abe ja re tere bass ki nhi hia ​

Answer 1

Explanation:

the branch of science concerned with the substances of which matter is composed, the investigation of their properties and reactions, and the use of such reactions to form new substances.