Is there anything else that goes with this question? I’m not sure how to answer.
That way they can get the average result and they're usually more accurate.
Yes it is C but for future reference, both A and B are referring to solids, and D is referring to a gas, hope this is helpful later!
Answer:
because of the following ways
Explanation:
1)because they protect plants
2)because they protect animals
3)because they are starting to use less vehicles
4)because they lessened the use of industrial vehicles
