Answer: The release of methane from thawed permafrost
Explanation:
With increasing global warming, permafrost in the arctic is melting. The carbon and methyl clathrates present in permafrost escape into the atmosphere to form carbon dioxide and methane, both greenhouse gases.
In the Arctic, molecules of methane are trapped in ice crystals as methyl clathrates. When the temperature increases, these crystals release methyl clathrates which become methane when in contact with the atmosphere.
The cause of the increasing atmospheric 
is due to the the thawing of dead organisms present in the permafrost. As the permafrost melts, these organisms decay and release into the atmosphere.
It is warmer near the equator<span> because sunlight hits Earth's surface most directly </span>near the equator<span>. </span>Near the poles<span>, sunlight arrives at a steep angle, so it must spread out over a greater area. Earth has seasons because the Earth's axis is tilted as it revolves around the sun.</span>
Answer: Traditional economic systems
Explanation: In other words, traditional economic systems are the most basic and ancient type of economies. Large parts of the world still qualify as traditional economies, primarily rural areas of second- or third-world countries, where most economic activity revolves around farming and other traditional activities.
There are 180° degree of longitude on each side of the prime meridians
