Answer:
B
Explanation:
The Quaternary sector is the part of the economy that is also sometimes described as the knowledge economy because it includes education activity.
Quaternary sector activity is measures, for example, by the presence and influence of higher education centers, foreign exchange students, research and investigation labs, think tanks, and innovation and entrepreneurship present in an economy.
Advanced technology is also an important aspect of the Quaternary sector that has only grown more important with time.
Answer:
N₂
Explanation:
The primary greenhouse gases in the atmosphere are carbon dioxide, methane, nitrous oxide, water vapour and ozone. These gases allow sunlight to reach the Earth's surface unhindered. The sunlight heats the surface. The heat as infrared reradiated to the atmosphere, the greenhouse gases absorb the heat energy. They do not allow heat to escape back trapping' the gases in the lower atmosphere.
Nitrogen is an inert gas present in the atmosphere is about 78%.
Only some nitrogen-fixing bacteria such as Rhizobium which fixes atmospheric nitrogen into the soil.
Thus, N₂ (nitrogen) is not a greenhouse gas.
The Democratic Republic of the Congo (DRC) (About this soundpronunciation (help·info) French: République démocratique du Congo (RDC)), also known as Congo-Kinshasa, DR Congo (French: RD Congo), the DROC,[6] or simply either Congo or the Congo, and historically Zaire, is a country in Central Africa. It is, by area, the largest country in sub-Saharan Africa, the second-largest in all of Africa (after Algeria), and the 11th-largest in the world. With a population of over 101 million, the Democratic Republic of the Congo is the most-populous officially Francophone country in the world, as well as the 2nd-most populous country in Africa (after Nigeria), and the 13th-most populous country in the world. Since 2015, the Eastern DR Congo has been the scene of an ongoing military conflict in Kivu.
