Hey there!
Increasing ventilation in enclosed spaces would for sure improve indoor air quality.
Keeping pets indoors, using darker paint on all interior walls installing sunscreens in all windows would not help improve indoor air quality.
I hope this helped! :-)
~Gabyngreen
She should start slowly easing off the exercise. Her progress will be lost and it will be much harder to start over again
A/C/D: All of these answers are positive effects, of human water use.
By process of elimination it must be (B) Also the run off is basically stripping the soil of the nutrients a farmer would need to grow crops, so this is incredibly bad - but a problem easily fixed.
It’s not easy and I understand but try to do whatever makes you happy! like watch your favorite shows or hobbies you like. I hope you feel better :D