Answer:
adding chlorine, checking the water.
Explanation:
Because this increases the quality of the water while the rest improve either quantity, or ease of access.
The answer to this question is the term adverse. Adverse term in treatment means an unsuitable or opposite result that a patient receives after a treatment. Adverse effect in medicine also shows a harmful or negative effect from drinking the medicine. Adverse effect is also known as a side effect.
Self-pollination occurs when the pollen from anther is deposited on the stigma of the same flower. Because cross-pollination allows for more genetic diversity, plants have developed many ways to avoid self-pollination.