Answer the following question given this paragraph: Most adults experience at least some hearing loss as they get older. The most common cause is exposure to loud sounds, which damage hair cells. The louder a sound is, the less exposure is needed for damage to occur. Even a single brief exposure to a sound louder than 115 decibels can cause hearing loss. Figure below shows the relationship between loudness, exposure time, and hearing loss. Q: Because it damages hair cells, what is the most cause of hearing loss in adults? Choices: - bacteria - ear wax - water in the ears - exposure to noise A:
exposure to noise
Answer the following question given this paragraph: Humans need lipids for many vital functions such as storing energy and forming cell membranes. Lipids can also supply cells with energy. In fact, a gram of lipids supplies more than twice as much energy as a gram of carbohydrates or proteins. Lipids are necessary in the diet for most of these functions. Although the human body can manufacture most of the lipids it needs, there are others, called essential fatty acids , that must be consumed in food. Essential fatty acids include omega-3 and omega-6 fatty acids. Both of these fatty acids are needed for important biological processes, not just for energy. Q: Humans need lipids for many vital functions such as storing energy and forming what? Choices: - ionic bonds - zygotes - enzymes - cell membranes A:
cell membranes
Q: Answer the following question given this paragraph: Water infiltrates the ground because soil and rock are porous. Between the grains are pores, or tiny holes. Since water can move through this rock it is permeable. Eventually, the water reaches a layer of rock that is not porous and so is impermeable. Water stops moving downward when it reaches this layer of rock. Q: Why does water infiltrate the ground? Choices: - gravity - prolonged drought conditions - run-off from flooding - because soil and rocks are porous A:
A: because soil and rocks are porous
Question: Answer the following question given this paragraph: A magnet is an object that attracts certain materials such as iron. You're probably familiar with common bar magnets, like the one shown in the Figure below . Like all magnets, this bar magnet has north and south magnetic poles . The red end of the magnet is the north pole and the blue end is the south pole. The poles are regions where the magnet is strongest. The poles are called north and south because they always line up with Earth's north-south axis if the magnet is allowed to move freely. (Earth's axis is the imaginary line around which the planet rotates. ). Q: What are the earth's two poles called? Choices: - southwest and south - east and west - west and south - north and south A:
Answer: north and south
*Question*
Answer the following question given this paragraph: Ribosomes are small organelles and are the site of protein synthesis. Ribosomes are found in all cells. Q: What are small organelles and are the site of protein synthesis? Choices: - nucleus - vacuoles - chloroplasts - ribosomes A:
**Answer**
ribosomes
*Question*
Answer the following question given this paragraph: The nuclei of radioisotopes are unstable, so they constantly decay and emit radiation. Q: The nuclei of radioisotopes are unstable, so they constantly decay and emit what? Choices: - moisture - acid - chemicals - radiation A:
**Answer**
radiation