- A light bulb is a kind of tool for seeing in the dark
- As the time a tool lasts increases , the number of tools discarded will decrease
- Hence, as the time a lightbulb lasts increases, the number of lightbulbs discarded will decrease

- To dispose of something can mean to discard something
- Humans move waste to a landfill for disposal / storage
- Hence, humans discard waste in a landfill

- Humans discard waste in a landfill
- Landfills have a negative impact on the environment
- Therefore, humans discarding waste in a landfill has a negative impact on the environment

- Humans discarding waste in a landfill has a negative impact on the environment
- If a human discards an object then that object will become waste
- Therefore, humans discarding objects in a landfill has a negative impact on the environment

- Humans discarding objects in a landfill has a negative impact on the environment
- Decreasing something negative has a positive impact on a thing
- So, decreasing the number of objects discarded in landfills by humans has a positive impact on the environment

- Decreasing the number of objects discarded in landfills by humans has a positive impact on the environment
- A light bulb is a kind of object
- So, decreasing the number of light bulbs discarded in landfills by humans has a positive impact on the environment

- As the time a lightbulb lasts increases, the number of lightbulbs discarded will decrease
- Decreasing the number of light bulbs discarded in landfills by humans has a positive impact on the environment
- Hence, increasing the time that a lightbulb lasts has a positive impact on the environment by decreasing the number of light bulbs discarded in landfills

- If an object is discarded in a landfill then that object is trash
- A light bulb is a kind of object
- Therefore, if a light bulb is discarded in a landfill then that lightbulb is trash

- Increasing the time that a lightbulb lasts has a positive impact on the environment by decreasing the number of light bulbs discarded in landfills
- If a light bulb is discarded in a landfill then that lightbulb is trash
- Hence, increasing the time that a lightbulb lasts has a positive impact on the environment by decreasing the amount of trash discarded in landfills

- Increasing the time that a lightbulb lasts has a positive impact on the environment by decreasing the amount of trash discarded in landfills
- Something that has a positive impact on something else is a kind of benefit
- Therefore, a benefit of increasing the time that a lightbulb lasts is  decrease in the amount of trash discarded in landfills

Therefore, a benefit of increasing the time that a lightbulb lasts is  decrease in the amount of trash discarded in landfills
[Question]A student is investigating a light bulb that saves energy and can last up to 10 times longer than other bulbs. Other than saving energy, which is another benefit of using these light bulbs?
[Context]- A light bulb is a kind of tool for seeing in the dark 
- Something that has a positive impact on something else is a kind of benefit 
- If an object is discarded in a landfill then that object is trash 
- To dispose of something can mean to discard something 
- A light bulb is a kind of object 
- Humans move waste to a landfill for disposal / storage 
- As the time a tool lasts increases , the number of tools discarded will decrease 
- Decreasing something negative has a positive impact on a thing 
- Landfills have a negative impact on the environment 
- If a human discards an object then that object will become waste