Study the following statements and choose the correct answer to the question given below:
1. Four students are discussing different sources used to produce electricity.
Student A: Solar energy can be used again and again because it is renewable.
Student B: Coal is a renewable source because it is found underground.
Student C: Petroleum can be replaced naturally within a few years.
Student D: Wind energy causes more pollution than coal.
Who has made the correct statement?
Student A: Solar energy can be used again and again because it is renewable.
Student B: Coal is a renewable source because it is found underground.
Student C: Petroleum can be replaced naturally within a few years.
Student D: Wind energy causes more pollution than coal.
Who has made the correct statement?
2. Four students compare filament lamps and LED lamps.
Student A: Filament lamps use less electricity than LEDs.
Student B: LED lamps contain a glowing tungsten filament.
Student C: LED lamps produce less heat and have a longer lifespan.
Student D: Filament lamps are more energy efficient than LEDs.
Who has made the correct comparison?
Student A: Filament lamps use less electricity than LEDs.
Student B: LED lamps contain a glowing tungsten filament.
Student C: LED lamps produce less heat and have a longer lifespan.
Student D: Filament lamps are more energy efficient than LEDs.
Who has made the correct comparison?