Boreal forests in siberia russia are most similar to what area in north america

The correct answer is - Boreal forests in Canada and Alaska.

The boreal forests are actually the biggest forests in the world. They are densely forests dominated by few types of coniferous trees. The biodiversity in these forests is low compared to the other forests on the planet, having much less plant diversity and much less animal diversity, thus they are very monotonous.

Most of the boreal forests stretch on the territories of the two biggest countries in the world, Russia and Canada, with parts of it being in Scandinavia and Alaska as well.

The boreal forests in Russia and the boreal forests in Canada and Alaska are pretty much the same, with only slight differences in the animal life, and even less in the plant life, so if someone has been dropped in one of them it would be extremely hard to tell where you are.

iii. and iv. only is the right answer