The subarctic climate has large forests of

a. oak, elm, and maple
b. fir, pine, and spruce

The correct answer is choice B.

As you travel further into the subarctic climate you will find forests of evergreens, including fir, pine and spruce, all of which are included in Choice C. There are also some smaller broad leaf trees like poplars and birch.

b.

developed countries have tended to improve the environment, while developing countries have tended to damage it.