Question

what is a significant advantage of biomass energy?
a. it helps reduce waste
b. it is not cost - effective
c. it is a non - renewable resource
d. it requires high energy input

what does the term \energy efficiency\ refer to?
a. increasing fossil fuel usage
b. enhancing energy waste
c. using less energy to achieve the same output
d. generating energy from non - renewable sources

Explanation:

First Question (What is a significant advantage of biomass energy?):

To determine the advantage of biomass energy, we analyze each option:

• Option a: Biomass energy uses organic waste (like plant matter, agricultural waste) to produce energy, so it helps reduce waste. This is a valid advantage.
• Option b: "Not cost - effective" is a disadvantage, not an advantage.
• Option c: Biomass is a renewable resource (since organic matter can be regrown), so this is incorrect.
• Option d: "Requires high energy input" is a disadvantage, as it would make the energy production less efficient.

We analyze the definition of energy efficiency:

• Option a: Increasing fossil fuel usage is not related to energy efficiency; in fact, fossil fuels are non - renewable and energy efficiency often aims to reduce their usage.
• Option b: Enhancing energy waste is the opposite of energy efficiency. Energy efficiency is about reducing waste.
• Option c: Energy efficiency is defined as using less energy to achieve the same output (for example, a more efficient light bulb uses less electricity to produce the same amount of light).
• Option d: Generating energy from non - renewable sources has nothing to do with the concept of energy efficiency.

Answer:

a. It helps reduce waste

Second Question (What does the term "energy efficiency" refer to?):