d. labor.
<span>Hope this helps. c:</span>
Answer:
The main function of the kidney is to help regulate everything. So this means pH, vitamins, etc. Kidneys are also useful for filtering vitamins and nutrients.
Answer:
Yes, for instance...
Picking up trash can be a big help, less pollution for us!
Less factories
Less smokers to prevent air pollution once again.
For the virus right now, wearing mask can help a lot.
Staying quarantined also can help make a difference.
I hope this helps.