Where do scientists believe the missing carbon is going? why are they not sure? (site 2)

Question: Where do scientists believe the missing carbon is going? Why are they not sure? (Site 2)

Scientist estimate that 1-2 billion metric tons of carbon a year are missing from the global carbon budget. Scientist cannot account for the location of 15 to 30 percent of the carbon released into the atmosphere each year. Worldwide humans release an estimated amount of 7 billion tons of carbon. Of that 7 billion 3 billion tons is released into the atmosphere and 2 billion tons is absorbed into the ocean, that leaves you with 2 billion tons of carbon. Scientists assume land vegetation absorbs the rest, but they don’t know exactly where or how much. 

Scientists began to suspect that boreal forests were involved. These forests are located at high latitudes in the northern hemisphere between 43°N and 65°N. They cover between 16 and 20 million square kilometers of land. Scientist took measurements of the carbon dioxide levels at ground level and at the tops of the trees in the boreal forest. They found that while the trees where actively photosynthesizing, the trees took in massive amounts of carbon dioxide and when the photosynthesizing slowed there was a slow release of carbon dioxide back into the atmosphere. They also found that large quantities of carbon dioxide are being stored in the soil beneath the trees. Due to this scientist can estimate that some of the carbon dioxide is being absorbed by the trees and soil in the boreal forest. 

european feudalism was a combination of legal and military customs in medieval europe that flourished between the 9th and 15th centuries. broadly defined, it was a way of structuring society around relationships derived from the holding of land in exchange for service or labour.

japanese feudalism. the era of feudalism in japan took place from the 12th through 19th centuries. during that period local rulers, either powerful families or military warlords, dominated the land, while the emperor was merely a figurehead and not a significant political presence.

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.