Natural selection is a fundamental concept in the theory of evolution, first proposed by Charles Darwin in the 19th century. It is the process by which certain traits become more or less common in a population over successive generations based on their advantages or disadvantages for survival and re

The discovery of penicillin in 1928 by Scottish bacteriologist Alexander Fleming marked one of the most significant breakthroughs in the history of medicine. While working at St. Mary's Hospital in London, Fleming observed that a mold called Penicillium notatum was killing a colony of bacteria.

Time travel has long been a captivating concept in both science fiction and physics. In literature and films, time travel often involves characters journeying to the past or future, exploring different timelines, and encountering alternate realities. Popular works like H.G. Wells’ The Time Mac

Oxygen is essential for human life, playing a crucial role in the process of respiration, which is how the body produces energy. Respiration occurs in two stages  external and internal. External respiration is the process of breathing, where oxygen is taken into the lungs and transferred to the