Question

we can combat noise pollution in a variety of ways. some examples of this are designing buildings that can absorb sound and well - planned landscapes. what is another way we can combat noise pollution?
removing all trees
walls along freeways

Explanation:

Trees can absorb sound, so removing all trees would not combat noise pollution. Walls along freeways can block and absorb noise, thus helping to combat noise pollution.

Answer:

Walls along freeways.