Answer :
To estimate the proportion of human energy requirements that are currently produced using fossil fuels, we need to consider recent data on energy consumption worldwide. Fossil fuels include coal, oil, and natural gas.
### Step-by-Step Solution:
1. Data Recap:
- Fossil fuels have been the dominant energy source for decades due to their high energy content and technological infrastructure.
- Renewable energy sources like wind, solar, hydropower, and nuclear energy are growing but are yet to surpass the total energy produced by fossil fuels.
2. Global Energy Consumption:
- According to the most recent data from reputable energy agencies such as the International Energy Agency (IEA), fossil fuels account for the majority of global energy consumption.
3. Proportion Breakdown:
- Current reports show that roughly 80% of the world's energy needs are met by fossil fuels. This includes energy for electricity generation, heating, and transportation.
4. Options Analysis:
- 100 percent: This option is incorrect as it suggests no other sources of energy contribute, which isn't true considering the presence of renewables.
- 0 percent: This is incorrect because it implies fossil fuels are not used at all, which is far from reality.
- 20 percent: This is incorrect as it underestimates the current dependence on fossil fuels.
- 80 percent: This is the accurate estimate based on current data.
- E: This is invalid as it does not quantify any percentage.
### Answer:
Therefore, approximately 80 percent of human energy requirements are currently produced with fossil fuels.
### Step-by-Step Solution:
1. Data Recap:
- Fossil fuels have been the dominant energy source for decades due to their high energy content and technological infrastructure.
- Renewable energy sources like wind, solar, hydropower, and nuclear energy are growing but are yet to surpass the total energy produced by fossil fuels.
2. Global Energy Consumption:
- According to the most recent data from reputable energy agencies such as the International Energy Agency (IEA), fossil fuels account for the majority of global energy consumption.
3. Proportion Breakdown:
- Current reports show that roughly 80% of the world's energy needs are met by fossil fuels. This includes energy for electricity generation, heating, and transportation.
4. Options Analysis:
- 100 percent: This option is incorrect as it suggests no other sources of energy contribute, which isn't true considering the presence of renewables.
- 0 percent: This is incorrect because it implies fossil fuels are not used at all, which is far from reality.
- 20 percent: This is incorrect as it underestimates the current dependence on fossil fuels.
- 80 percent: This is the accurate estimate based on current data.
- E: This is invalid as it does not quantify any percentage.
### Answer:
Therefore, approximately 80 percent of human energy requirements are currently produced with fossil fuels.
