Answer:
China's Tang Dynasty gave rise to a new “golden age” by trading along the Silk ... the later Ming Dynasty built on that with expansion across most of Afro-Eurasia. ... Each dynasty, however, differed in how well they maintained control over such an ... Buddhism, and Confucianism—along with the traditional Chinese beliefs of
Explanation:
Nitrogen is special because it is necessary for growth and reproduction. It's needed for plants and animals to survive. The main function for the atmosphere i believe is to give oxygen and nitrogen.
Answer:
D. A brown gas produced
Explanation:
When a chemical reaction occur, there are several changes that takes place such as change in color, odor change, formation of a gas, and formation of a precipitate etcetera.
In the given chemical reaction, two colorless gas (NO and O2) react together and form brown gas (NO2). So, the change of gas from colorless to brown gas is the evidence that shows chemical reaction occurred.
Hence, the correct option is "D. A brown gas produced".
