Attock fort was built by which emperor?

Edward Jenner developed the first successful vaccine in 1796 by using cowpox material to protect against smallpox. His pioneering work laid the foundation of modern immunology and preventive medicine worldwide.

A PROM burner is a hardware device used to write or program data onto Programmable Read-Only Memory (PROM) chips. These tools are commonly used in electronics, embedded systems, and firmware development.

Guglielmo Marconi successfully transmitted radio signals over long distances and is widely recognized as the pioneer of practical wireless communication. His experiments laid the foundation for modern radio, television, and wireless technology.

The smooth endoplasmic reticulum (SER) is responsible for the synthesis of lipids, including fats and steroids. It also helps in detoxification processes and calcium storage, especially in liver and muscle cells.

Sulphur dioxide contributes to acid rain formation, which corrodes iron and steel structures over time. Industrial pollution releasing this gas can weaken bridges, buildings, and monuments by accelerating rusting and chemical deterioration.