Answer the following question given this paragraph: Ice wedging and abrasion are two important processes of mechanical weathering. Q: Abrasion is a process of what type of weathering? Choices: - geological - molecular - environmental - mechanical A:
mechanical
(Question)
Answer the following question given this paragraph: Figure 41.6 The nephron is the functional unit of the kidney. The glomerulus and convoluted tubules are located in the kidney cortex, while collecting ducts are located in the pyramids of the medulla. (credit: modification of work by NIDDK). Q: The nephron is the functional unit of what pair of organs? Choices: - lungs - eyes - ribs - kidneys A:
(Answer)
kidneys
Ques: Answer the following question given this paragraph: Scientists are searching for ways to create controlled nuclear fusion reactions on Earth. Their goal is develop nuclear fusion power plants, where the energy from fusion of hydrogen nuclei can be converted to electricity. You can see how this might work in the Figure below . In the thermonuclear reactor, radiation from fusion is used to heat water and produce steam. The steam can then be used to turn a turbine and generate electricity. Q: What drives the turbine in a thermonuclear reactor? Choices: - magnets - heated oil - wind energy - heated water or steam A:
Ans: heated water or steam
(Q).
Answer the following question given this paragraph: Wine, air, and gunpowder are other examples of common homogeneous mixtures ( Figure below ). Their exact compositions can vary, making them mixtures rather than pure substances. Wine is a liquid mixture of water, ethanol, and a variety of other dissolved substances. Air is a mixture of nitrogen gas (78%), oxygen gas (21%), and small amounts of various other gases. Gunpowder is a solid mixture comprised of potassium nitrate (75%), charcoal (15%) and sulfur (10%). Q: Wine, air, and gunpowder are all examples of what kind of common mixtures? Choices: - combined - contiguous - heterogeneous - homogeneous A:
(A).
homogeneous
Ques:Answer the following question given this paragraph: Telomerase and Aging Cells that undergo cell division continue to have their telomeres shortened because most somatic cells do not make telomerase. This essentially means that telomere shortening is associated with aging. With the advent of modern medicine, preventative health care, and healthier lifestyles, the human life span has increased, and there is an increasing demand for people to look younger and have a better quality of life as they grow older. In 2010, scientists found that telomerase can reverse some age-related conditions in mice. This may have potential in [2] regenerative medicine. Telomerase-deficient mice were used in these studies; these mice have tissue atrophy, stem 2. Jaskelioff et al. , "Telomerase reactivation reverses tissue degeneration in aged telomerase-deficient mice," Nature 469 (2011): 102-7. Q: Cells that undergo cell division continue to have their telomeres shortened, thus telomere shortening is associated with what life process? Choices: - metabolism - reducing - reproduction - aging A:

Ans:aging
Ques:Answer the following question given this paragraph: All musical instruments create sound by causing matter to vibrate. The vibrations start sound waves moving through the air. Q: How do all musical instruments create sound? Choices: - condensation - stimulation - conduction - vibration A:

Ans:
vibration