Answer the following question given this paragraph: Circulatory System Changes Blood volume increases substantially during pregnancy, so that by childbirth, it exceeds its preconception volume by 30 percent, or approximately 12 liters. The greater blood volume helps to manage the demands of fetal nourishment and fetal waste removal. In conjunction with increased blood volume, the pulse and blood pressure also rise moderately during pregnancy. As the fetus grows, the uterus compresses underlying pelvic blood vessels, hampering venous return from the legs and pelvic region. As a result, many pregnant women develop varicose veins or hemorrhoids. Q: Blood volume increases substantially during pregnancy, so that by childbirth, it exceeds its preconception volume by 30 percent, or approximately what? Choices: - 2-3 liters - 3-5 liters - 0-1 liters - 1-2 liters A:
1-2 liters
(Question)
Answer the following question given this paragraph: Strong gravitational fields can alter the rate of time passing. True. Q: What is capable of altering the rate of time passing? Choices: - strong planetary fields - weak gravitational fields - strong magnetic fields - strong gravitational fields A:
(Answer)
strong gravitational fields
Ques: Answer the following question given this paragraph: Not only salt, but many other solutes can dissolve in water. In fact, so many solutes can dissolve in water that water has been called the universal solvent. Even rocks can dissolve in water, which explains the cave that opened this article. A solute that can dissolve in a given solvent, such as water, is said to be soluble in that solvent. Conversely, a solute that cannot dissolve in a given solvent is said to be insoluble in that solvent. Q: What liquid is referred to as the "universal solvent"? Choices: - bromine - gasoline - blood - water A:
Ans: water
(Q).
Answer the following question given this paragraph: Mass Percentage Earlier in this chapter, we introduced percent composition as a measure of the relative amount of a given element in a compound. Percentages are also commonly used to express the composition of mixtures, including solutions. The mass percentage of a solution component is defined as the ratio of the component's mass to the solution's mass, expressed as a percentage: mass percentage =. Q: The mass percentage of a solution component is defined as the ratio of the component's mass to ________? Choices: - enough ' s mass - solvent's mass - liquid's mass - solution ' s mass A:
(A).
solution ' s mass
Ques:Answer the following question given this paragraph: Acids can dissolve many metals; a spilled acid can lead to contamination. Q: What corrosive substances capable of dissolving many metals can cause contamination if spilled? Choices: - salts - bases - ions - acids A:

Ans:acids
Answer the following question given this paragraph: Combustion reactions involve the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide. Q: What involves the reaction of a hydrocarbon with oxygen gas to produce water and carbon dioxide? Choices: - hydrogen reactions - chemical reactions - material reactions - combustion reactions A:
combustion reactions