Q: Liquid hcl can be used to do what to the ph of a swimming pool? Read this paragraph and choose the correct option from the provided answers: We all enjoy a cool dip in a swimming pool on a hot day, but we may not realize the work needed to keep that water safe and healthy. The ideal pH for a swimming pool is around 7.2. The pH will change as a result of many factors. Adjustment can be accomplished with different chemicals depending on the tested pH. High pH can be lowered with liquid HCl (unsafe material) or sodium bisulfate. The bisulfate anion is a weak acid and can dissociate partially in solution. To increase pH, use sodium carbonate. The carbonate anion forms an equilibrium with protons that results in some formation of carbon dioxide. Choices: - increase it - raise it - heighten it - lower it A:
lower it

(Question)
Q: What element is released into the atmosphere by the burning of fossil fuels? Read this paragraph and choose the correct option from the provided answers: water. Sulfur, critical to the 3D folding of proteins (as in disulfide binding), is released into the atmosphere by the burning of fossil fuels, such as coal. The cycling of these elements is interconnected. For example, the movement of water is critical for the leaching of nitrogen and phosphate into rivers, lakes, and oceans. Furthermore, the ocean itself is a major reservoir for carbon. Thus, mineral nutrients are cycled, either rapidly or slowly, through the entire biosphere, from one living organism to another, and between the biotic and abiotic world. Choices: - carbon - helium - oxygen - sulfur A:
(Answer)
sulfur

Ques: Q: What distinguishing characteristic of annelid anatomy shows specialization and adaptation? Read this paragraph and choose the correct option from the provided answers: Annelids are divided into many repeating segments. The earthworm in Figure below is an annelid. You can clearly see its many segments. Segmentation of annelids is highly adaptive. Each segment has its own nerve and muscle tissues. This allows the animal to move very efficiently. Some segments can also be specialized to carry out particular functions. They may have special structures on them. For example, they might have tentacles for sensing or feeding, "paddles" for swimming, or suckers for clinging to surfaces. Choices: - asymmetry - beautiful - compression - segmentation A:
Ans: segmentation

(Q).
Q: What do we call the diffusion of water across a membrane because of a difference in concentration? Read this paragraph and choose the correct option from the provided answers: The diffusion of water across a membrane because of a difference in concentration is called osmosis. Choices: - cell transportation - hemostasis - electrolysis - osmosis A:
(A).
osmosis

Ques:Q: What do you call sound that has a wave frequency higher than the human ear can detect? Read this paragraph and choose the correct option from the provided answers: Ultrasound is sound that has a wave frequency higher than the human ear can detect. It includes all sounds with wave frequencies higher than 20,000 waves per second, or 20,000 hertz (Hz). Choices: - dynamic sound - supersonic sound - hypersonic sound - ultrasound A:

Ans:ultrasound

Q: What type of mapping is critical for identifying the location of genes that cause genetic diseases? Read this paragraph and choose the correct option from the provided answers: Determining recombination frequencies between genes located on the same chromosome allows a linkage map to be developed. Linkage mapping is critical for identifying the location of genes that cause genetic diseases. Choices: - interaction mapping - diagnostic mapping - chemical mapping - linkage mapping A:
linkage mapping