Q: Scientific notation expresses a number as a what, times a power of 10? Read this paragraph and choose the correct option from the provided answers: Scientific notation expresses a number as a coefficient times a power of 10. Choices: - fraction - function - expression - coefficient A:
coefficient

Q: What form because water erodes the outside of curves and deposits eroded material on the inside? Read this paragraph and choose the correct option from the provided answers: Meanders form because water erodes the outside of curves and deposits eroded material on the inside. Over time, the curves shift position. Choices: - inlets - cascades - caverns - meanders A:
meanders

Q: In a fuel cell, energy is not stored; electrical energy is provided by what? Read this paragraph and choose the correct option from the provided answers: called an alkaline battery when adapted to operate under alkaline conditions. Button batteries have a high output-to-mass ratio; lithiumiodine batteries consist of a solid electrolyte; the nickel cadmium (NiCad) battery is rechargeable; and the leadacid battery, which is also rechargeable, does not require the electrodes to be in separate compartments. A fuel cell requires an external supply of reactants as the products of the reaction are continuously removed. In a fuel cell, energy is not stored; electrical energy is provided by a chemical reaction. Choices: - fusion reaction - carbon reaction - consumption reaction - chemical reaction A:
chemical reaction

Q: Why is water important for the nervous system? Read this paragraph and choose the correct option from the provided answers: There are many choices you can make to keep your nervous system healthy. One obvious choice is to avoid using alcohol or other drugs. Not only will you avoid the injury that drugs themselves can cause, but you will also be less likely to get involved in other risky behaviors that could harm your nervous system. Another way to keep the nervous system healthy is to eat a variety of healthy foods. The minerals sodium, calcium, and potassium, and vitamins B 1 and B 12 are important for a healthy nervous system. Some foods that are good sources for these minerals and vitamins include milk, whole grains, beef steak, and kidney beans (shown in Figure below ). Your brain also needs healthy fats like those in nuts and fish. Recall that fats insulate the axons of neurons. These fats help build new connections between nerves and brain cells. These fats may improve memory and increase learning and intelligence. Water is also important for the nervous system, so drink plenty of water and other fluids. This helps prevent dehydration, which can cause confusion and memory problems. And get plenty of rest. Your brain requires plenty of rest so it can strengthen circuits that help with memory. A good night's sleep will help keep your brain functioning at its best. Choices: - to carry nutrients - to carry information - to prevent disease - to prevent dehydration A:
to prevent dehydration