I'm pretty sure its Brazil and Venezuela,
Taiga is a Russian word that refers to an ecosystem characterized by snow and coniferous trees.
In English it is known as Boreal Forest or Snow Forest.
A large part of the Northern Hemisphere is made up of Taiga. Northern Russia, parts of Mongolia, Scottish Highlands, Northern Japan and Northern Canadian Provinces are all covered in Snow Forests.
The climate in these areas are generally cold and dry where a unique habitats has evolved comprising of Bears, Moose, Red Fox, Polar Bears etc.
The correct answer is - cyanobacteria.
The atmospheric oxygen came from the cyanobacteria. These were one of the earliest living organisms on Earth. The cyanobacteria was using photosynthesis in order to create its own food. The photosynthesis process requires sunlight, carbon dioxide, water, and oxygen. The oxygen is mostly released as a waste product from the process of photosynthesis, thus the cyanobacteria were literally releasing oxygen that was ending up into the atmosphere. As more and more cyanobacteria there were across the planet, more and more oxygen they were releasing into the atmosphere, slowly changing the composition of the atmosphere, and setting the basis of it as we know it now.
Central Plateau Of Mexico