The correct answer is - a. hibernation.
Big portion of the animals living in the alpine biome tend to hibernate during the winter period, and the reasons for that are multiple, like food shortage, very cold weather, and very importantly, there's places where to take shelter and hibernate.
The taiga, on the other hand, comes to be more cruel in this aspect. It is a biome that in general has a food shortage, the winter lasts for most of the year, but the animals do not have any suitable places as to where they can hibernate, so they have to be active all the time.
Answer:
Although the informal sector makes up a significant portion of the economies in developing countries, it is sometimes stigmatized as troublesome and unmanageable. However, the informal sector provides critical economic opportunities for the poor[3][4] and has been expanding rapidly since the 1960s.[5] Integrating the informal economy into the formal sector is an important policy challenge.[3]
Answer:
natural gas from fracking
Explanation:
Biomass fuel is made from organic material. Natural gas is not considered a source of biomass fuel, as it itself is fuel.
If you meant to type coffee plants the answer is volcanic soils.
Addis Ababa, Bahir Dar, and Ambo are some examples I believe
