There are different materials of raw water, but also the raw water comes from ponds,rivers, and oceans but they might be good sometimes, and gas not been treated and has bacteria or mold buy that is not good.
Answer: Microorganism activity affects soil acidity and the amount of organic matter in soil. It also affects the nutrient and mineral levels in soil as well as soil structure.
Explanation:
Definite article is used before a noun (person place or thing) to indicate that the identity of the noun is known to the reader.
indefinite article is used before a noun that is general or when its identity is not known.
<span>2. This type of microscope is called a scanning electron microscope. 3. The difference between these two cells are that one has a nucleus and the other one doesn't. A eukaryotic cell has a nucleus and a prokaryotic does not.</span>
