Q: Q: Stirring, surface area, and temperature affect the rate at which what occurs? Read this paragraph and choose the correct option from the provided answers: When you add sugar to a cold drink, you may stir it to help the sugar dissolve. If you don't stir, the sugar may eventually dissolve, but it will take much longer. Stirring is one of several factors that affect how fast a solute dissolves in a solvent. Temperature is another factor. A solid solute dissolves faster at a higher temperature. For example, sugar dissolves faster in hot tea than in ice tea. A third factor that affects the rate of dissolving is the surface area of the solute. For example, if you put granulated sugar in a glass of ice tea, it will dissolve more quickly than the same amount of sugar in a cube. That's because granulated sugar has much more surface area than a cube of sugar. You can see videos of all three factors at these URLs:. Choices: - concentration dissolves - solute freezes - solute fragments - solute dissolves A:
A: solute dissolves

Q: Q: What is the main function of blood? Read this paragraph and choose the correct option from the provided answers: The main function of blood is transport. Blood in arteries carries oxygen and nutrients to all the body's cells. Blood in veins carries carbon dioxide and other wastes away from cells to be excreted. Blood also transports the chemical messengers called hormones to cells throughout the body where they are needed to regulate body functions. Blood has several other functions as well. For example, blood:. Choices: - digestion - respiration - excretion of waste - to transport A:
A: to transport

Q: Q: What do we call zeros that appear after nonzero digits? Read this paragraph and choose the correct option from the provided answers: 4. Zeros that appear after all nonzero digits are called right-end zeros. Right-end zeros in a number that lacks a decimal point are not significant. A. 140 has two significant figures. Choices: - left-end zeros - significant digits - placeholders - right-end zeros A:
A: right-end zeros

Q: Q: What are the three most common protective devices? Read this paragraph and choose the correct option from the provided answers: There are multiple ways to prevent these situations from occurring. The three most common protective devices are fuses, circuit breakers, and surge protectors. Choices: - fuses , circuit breaks & surge claws - tranistors, resistors & diodes - fuses , fabrication breaks & surge protectors - fuses, circuit breaks & surge protectors A:
A: fuses, circuit breaks & surge protectors