William Henry Perkin The man who invented synthetic dyes William Henry Perkin was born on March 12, 1838, in London,…
https://www.youtube.com/watch?v=YqNO2SC6jEQ https://www.youtube.com/watch?v=HctZg2aOPMw
https://www.youtube.com/watch?v=Vi7EvW-iz8U&t=30s
https://www.youtube.com/watch?v=59mFcIKjfOY Stepwells A millennium ago, stepwells were fundamental to life in the driest parts of India. Although many have beenneglected, recent restoration has returned them to their…
1. Read the questions very carefully. Generally, the questions ask you to do different things in addition to the main…
A) In recent years we have all been exposed to dire media reports concerning the impending demise of global coal…
https://www.youtube.com/watch?v=eW_PVguzyS8&t=5s
https://www.youtube.com/watch?v=QLx4BFz4zFM&t=3s
When Things Get Out of Hand https://www.youtube.com/watch?v=hAMLo7c5f7Y The first of our three brains to evolve is what scientists call the…