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Answer: (a) Monkeys

Mount Fuji is an inhospitable environment for monkeys due to the fact that there are no flowing rivers.

Mount Fuji Fauna and Flora

Mount Fuji nurtures a rich ecosystem with some 37 species of mammals confirmed living there. Rare animals, including the Japanese serow (a type of antelope) as well as black bears can be seen. The area also has a rich birdlife population with some one fourth of Japan’s birds living around the mountain. Of these birds, approximately 100 species have their breeding grounds in the wooded areas at the foot of the mountain. This includes rare species such as the Siberian Fly Catcher and Japanese Grey Thrush. In contrast to the area’s rich avian population, because there are few above-ground water sources around the mountain, only seven amphibian species and five species of reptiles have been confirmed.

Serow	Sika deer

Most of Mount Fuji’s insect species can be found in the deciduous forest area between 700-1600 meters. Of particular interest are the rare grassland butterfly species that can be spotted in the forested area and the various dragonfly species found around Kodanuki marsh and Lake Tanuki. The area is also known for its Japanese trout, called ayu, which breed in the rivers around Mount Fuji. Since river water temperatures remain constant throughout the year thanks to the warm spring water flowing into the rivers, ayu can actually be found in the waters of the area year-round.

Chestnut tiger (Parantica sita)	Comma (Polygonia c-album)

Finally, with its great height, Japan’s tallest mountain supports rich plant life in both its hilly region below 700 meters as well as its alpine region over 2500 meters. Indeed, about half of Shizuoka’s flora?including ferns as well as many kinds of rare species?exists along the slopes of Mount Fuji.

Cirsium purpuratum	Japanese knotweed (Reynoutria japonica)