Answer:
Ang nitrous oxide , karaniwang kilala bilang tumatawa na gas o nitrous , ay isang chemical compound, isang oksido ng nitrogen na may formula na N2O. Sa temperatura ng kuwarto, ito ay isang walang kulay na di-nasusunog na gas, na may bahagyang metal na pabango at panlasa. Sa mataas na temperatura, ang nitrous oxide ay isang malakas na oxidizer katulad ng molekular oxygen.
Ang nitrous oxide ay may malaking paggamit ng medisina, lalo na sa operasyon at pagpapagaling ng ngipin, dahil sa pagbabawas ng anestesya at sakit.
Answer:b
Explanation:because i have done this question
The result of the Islamic golden age , was an era of stunning, intellectual and cultural achievements.
The Underground Railroad was a network of people, houses, and roads that led slaves from the South to the North to escape their masters and enjoy freedom in the North and in Canada. Conductors were people who led slaves from one house to another to evade Southern rangers who were looking for their masters' lost slaves.
Based from this information, statements 1 and 4 are characteristics of the Underground Railroad.
