Correct option is C. Approximately 10 kilograms (kg) of carnivore (secondary consumer) biomass can be supported by a field plot containing 1000kg of plant material.
Plant-based biomass is used as a fuel to generate heat or electricity. Examples include wood and its byproducts, energy crops, agricultural trash, and household, farm, and industrial garbage. Some people confuse the terms biomass and biofuel because biomass can be used directly as fuel (such as wood logs).
Others combine two terms into one. According to US and EU government definitions, a biofuel is a gas or liquid fuel that is utilized in transportation. The Joint Research Centre of the European Union uses the term "solid biofuel" and defines it as unprocessed or processed organic material of biological origin used as fuel, such as firewood, wood chips, and wood pellets.
2019 saw the production of 57 EJ (exajoules) from biomass as opposed to 190 EJ from fossil fuels.
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