Answer the following question given this paragraph: Nonmetals are elements that do not conduct electricity. They are the second largest class of elements. Nonmetals are also poor conductors of heat. The majority of nonmetals are gases. Solid nonmetals are dull and brittle. Q: Elements that do not need to conduct electricity are known as what? Choices: - alloys - carbonates - silicates - nonmetals A:
nonmetals
(Question)
Answer the following question given this paragraph: To Your Health: Energy Expenditures Most health professionals agree that exercise is a valuable component of a healthy lifestyle. Exercise not only strengthens the body and develops muscle tone but also expends energy. After obtaining energy from the foods we eat, we need to expend that energy somehow, or our bodies will store it in unhealthy ways. Like the energy content in food, the energy expenditures of exercise are also reported in kilocalories, usually kilocalories per hour of exercise. These expenditures vary widely, from about 440 kcal/h for walking at a speed of 4 mph to 1,870 kcal/h for mountain biking at 20 mph. Table 7.2 "Energy Expenditure of a 180-Pound Person during Selected Exercises" lists the energy expenditure for a variety of exercises. Saylor URL: http://www. saylor. org/books. Q: Like the energy content in food, the energy expenditures of exercise are also reported in what units? Choices: - ironies - gigabytes - grams - kilocalories A:
(Answer)
kilocalories
Ques: Answer the following question given this paragraph: Unless an animal cell (such as the red blood cell in the top panel) has an adaptation that allows it to alter the osmotic uptake of water, it will lose too much water and shrivel up in a hypertonic environment. If placed in a hypotonic solution, water molecules will enter the cell, causing it to swell and burst. Plant cells (bottom panel) become plasmolyzed in a hypertonic solution, but tend to do best in a hypotonic environment. Water is stored in the central vacuole of the plant cell. Q: What kind of solution might cause animal cells to burst? Choices: - Acid Solution - monatomic - eutrophic - hypotonic A:
Ans: hypotonic
(Q).
Answer the following question given this paragraph: perpendicular to the surface at the point where the ray strikes the surface. Q: Desert plants have evolved processes to conserve water and deal with harsh conditions. a more efficient use of co2 allows plants to adapt to living with what? Choices: - less competition - more water - more sunlight - less water A:
(A).
less water
Ques:Answer the following question given this paragraph: Beneath the crust is the mantle . The mantle is made of hot, solid rock. Through the process of conduction, heat flows from warmer objects to cooler objects ( Figure below ). The lower mantle is heated directly by conduction from the core. Q: What layer, made of hot, solid rock, is beneath the earth's crust? Choices: - marble - core - magma - mantle A:

Ans:mantle
Answer the following question given this paragraph: Fresh water is also preserved by purifying wastewater. Wastewater is water that has been used for cleaning, washing, flushing, or manufacturing. It includes the water that goes down your shower drain and that is flushed down your toilet. Instead of dumping wastewater directly into rivers, wastewater can be purified at a water treatment plant ( Figure below ). When wastewater is recycled, waterborne diseases caused by pathogens in sewage can be prevented. What are some ways you can save water in your own house?. Q: What do we call water that has been used for cleaning, washing, flushing, or manufacturing? Choices: - Grey water - sewage - groundwater - wastewater A:
wastewater