Answer:
Wind power
Explanation:
Because the wind won't always be bowing enough for the human population.
While most forms of alternative energy are sustainable, biomass energy may not be due to potential deforestation, soil degradation and impacts to biodiversity, along with the energy consumed in its production.
In the realm of energy, most sources of alternative energy are considered sustainable, as they rely on naturally replenishing resources. However, an example of alternative energy that might not be sustainable is the use of biomass for energy production. Biomass energy is created from organic material, typically plants or animal waste. While these materials are naturally occurring and theoretically renewable, they require a certain amount of land, water, and time to grow. If these resources are managed poorly or used excessively, it could result in deforestation, soil degradation, and a negative impact on biodiversity. Furthermore, the energy used in the collection, transportation and processing of this biomass can often outweigh the energy gained, which raises questions about its overall sustainability. Hence, for these reasons, biomass might not be a truly sustainable form of alternative energy.
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b. Tundra
c. Rainforest
d. Taiga