Question

why have a number of stores and restaurants changed from using styrofoam to using cardboard containers?
a. cardboard is made in the united states, and styrofoam is made in canada.
b. cardboard uses more oil to produce, and styrofoam uses paper to produce.
c. cardboard is more colorful than styrofoam.
d. cardboard takes less time to break down in a landfill.

Explanation:

Styrofoam is a non - biodegradable material. It can take hundreds of years to break down in a landfill. Cardboard, on the other hand, is biodegradable and breaks down much faster. This environmental factor is a key reason for the switch. Option A about production location is not a relevant reason for the switch. Option B is incorrect as cardboard is made from paper (wood pulp) and Styrofoam is made from petroleum - based products (uses more oil in a sense as it's a fossil - fuel derived product). Option C about color is not a practical or environmental reason for the change.

Answer:

D. Cardboard takes less time to break down in a landfill.