I think that it is atmosphere but not 100% sure you might want to double check
Answer:its " with monitoring, the concentration of every pollutant has decreased."
Explanation: just took it on Ap3x
An independent variable is a variable which change is not affected by that of another variable. By process of elimination you can take out B and C. An independent variable can also change so that takes out A. That leaves D.
Answer:
True
Explanation:
divergent, convergent, transform
The statistics of weather how hot or cold it is