(Q).
Answer the following question given this paragraph: Water treatment is a series of processes that remove unwanted substances from water. The goal of water treatment is to make the water safe to return to the natural environment or to the human water supply. Treating water for other purposes may not include all the same steps. That's because water used in agriculture or industry may not have to be as clean as drinking water. Q: What is a series of processes that remove unwanted substances from water called? Choices: - water filtration - water dilution - water cleaning - water treatment A:
(A).
water treatment

(Q).
Answer the following question given this paragraph: Unsaturated fatty acids have at least one double bond between carbon atoms. As a result, some carbon atoms are not bonded to as many hydrogen atoms as possible. They are unsaturated with hydrogens. Unsaturated fatty acids are found in oils. Q: Where are unsaturated fatty acids commonly found? Choices: - animal products - butter - fish - oil A:
(A).
oil

(Q).
Answer the following question given this paragraph: Organ system : Group of organs that work together to perform a certain function. Examples of organ systems in a human include the skeletal, nervous, and reproductive systems. Q: Examples of organ systems in a human include the skeletal, nervous, and what? Choices: - affecting systems - nervous systems - immune systems - reproductive systems A:
(A).
reproductive systems