Answer the following question given this paragraph: Many flatworms are parasites with vertebrate hosts. Some are free-living carnivores that live mainly in aquatic habitats. Q: Some flatworms are free-living carnivores that live mainly in which type of habitats? Choices: - Deciduous forest - Desert - freshwater - aquatic A:
aquatic
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Answer the following question given this paragraph: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of acid rain on lakes. Suggest other compounds that might be effective in treating lakes. Give a plausible reason to explain why Ca(OH)2 and CaCO3 are used. ♦️ Approximately 95% of the chlorine produced industrially comes from the electrolysis of sodium chloride solutions (brine): NaCl(aq) + H2O(l) Cl2(g) + H2(g) + NaOH(aq) Chlorine is a respiratory irritant whose presence is easily detected by its penetrating odor and greenishyellow color. One use for the chlorine produced is in the manufacture of hydrochloric acid. Q: Calcium hydroxide and calcium carbonate are effective in neutralizing the effects of what on lakes? Choices: - oil rain - ozone rain - dioxide rain - acid rain A:
acid rain
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Answer the following question given this paragraph: Figure 11.31 Bronchial tubes in the lungs branch into ever-smaller structures, finally ending in alveoli. The alveoli act like tiny bubbles. The surface tension of their mucous lining aids in exhalation and can prevent inhalation if too great. Q: Bronchial tubes in the lungs branch into ever-smaller structures, finally ending in alveoli. the alveoli act like what? Choices: - filters - springs - bellows - tiny bubbles A:
tiny bubbles
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Answer the following question given this paragraph: Neutralization reactions between an acid and a base yield a salt and water. In some cases, this results in a completely neutral solution. However, some salts are weakly acidic or basic. How can we tell whether a given salt will act as an acid or base? Looking at the relative strengths of the acid and base that were used to form the salt can give us information on the acid-base properties of the resulting solution. Q: What kind of reactions between an acid and a base yield a salt and water? Choices: - oxidation - evaporation - distillation - neutralization A:
neutralization
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