The main sources are humans which is why it is stated that the global warming is man made. The levels have increased beyond all measure, increasing since the 1950s by a 100 CO2 parts per million, and it keeps increasing by 2ppm on a yearly basis. The statistics from the industrial revolution era are not much different and show how much we've increased the CO2 in modern times.
The answer is B) Extremely fertile soils
Answer:
The Olympic Forest was originally designated as the Olympic Forest Reserve but was renamed to the Olympic National Forest in the early 1900s. This region also contains several wilderness areas including the Brothers Wilderness, Buckhorn Wilderness, Colonel Bob Wilderness, Mt. Skokomish Wilderness, and Wonder Mountain Wilderness that are administered by two ranger districts – the Pacific Ranger District and the Hood Canal Ranger District.
There are 6 named mountains in Tiger Mountain State Forest. The highest and most prominent peak is East Tiger Mountain at 3,004 ft. The remaining peaks, from east to west, include West Tiger 1 at 2,958 ft, West Tiger 2 at 2,757 ft, and West Tiger 3 at 2,557 ft. The remaining two peaks are located just south of the main ridge and include Middle Tiger at 2,607 ft and South Tiger at 2,028 ft.
Tiger Mountain State Forest is one the most heavily trafficked forests in the entire state being located so close to Seattle. The forest has over half a dozen trails that lead to the top of one of the many peaks as well as numerous trails that traverse sections of the forest. The forest is known by locals for its accessibility, lush landscape, hiking, running, and mountain biking trails.
Explanation:
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The answers are the Taiga Shield and The Boreal Shield are
two of the main ecozones in the western hemisphere. Taiga Shield ecozone is an ecozone that stretches
across Canada’s subarctic region, while Boreal Shield Ecozone, it is the
largest ecozone in Canada and also it contains one of the world’s largest
ecozone.