- Resources need to be managed
- An example of managing / maintaining the number / the use of something is replacing that something
- Therefore, an example of managing the use of a resource is replacing that resource

- An example of managing the use of a resource is replacing that resource
- Trees are a kind of natural resource
- Therefore, an example of managing the use of trees is replacing trees

- "A balance can measure a liquid's mass" is not relevant

- An example of managing the use of trees is replacing trees
- A tree can be replaced by planting a new tree each time one is cut down
- Hence, an example of managing the use of trees is planting a new tree each time one is cut down

Therefore, an example of managing the use of trees is planting a new tree each time one is cut down
[Question]Many products are made from trees. Which is the best way to manage the use of trees?
[Context]- Trees are a kind of natural resource 
- Resources need to be managed 
- An example of managing / maintaining the number / the use of something is replacing that something 
- A balance can measure a liquid's mass
- A tree can be replaced by planting a new tree each time one is cut down