What are the ways to avoid air pollution​

Reduce the number of trips you take in your car.
Reduce or eliminate fireplace and wood stove use.
Avoid burning leaves, trash, and other materials.
Avoid using gas-powered lawn and garden equipment.

Bolsa can be referring  to any type of bag,

Choose the correct answer. what does this trip remind charlie of? the walks he took with his family to camp in the desert for one night. the excursion that he made in the fifth grade to the salt mines. the expensive price of salt in supermarkets in his town. the crafts they bought in guatemala.