Answer the following question given this paragraph: Competition is a relationship between living things that depend on the same resources. Q: What kind of relationship exists between living things that depend on the same resources? Choices: - parasitic - symbiotic - antagonistic - competition A:
competition
(Question)
Answer the following question given this paragraph: Lasers Most light emitted by atoms is polychromaticcontaining more than one wavelength. In contrast, lasers (from light amplification by stimulated emission of radiation) emitmonochromatic light a single wavelength only. Lasers have many applications in fiber-optic telecommunications, the reading and recording of compact discs (CDs) and digital video discs (DVDs), steel cutting, and supermarket checkout scanners. Laser beams are generated by the same general phenomenon that gives rise to emission spectra, with one difference: only a single excited state is produced, which in principle results in only a single frequency of emitted light. In practice, however, inexpensive commercial lasers actually emit light with a very narrow range of wavelengths. How a CD player uses a laser to read a CD. Inside a CD is a flat, light-reflecting layer called "land. " On the land are many "pits" recorded in a spiral-shaped track. (From the laser's point of view, pits are actually the "bumps" shown here because the master disc with pits is duplicated negatively, turning the pits into bumps. ) Pits have the same light-reflecting surface as land, but there are differences in the frequencies of the reflected light in the pit and the land, making light reflected by pits relatively dark compared with light reflected by land. Q: Light emitted by atoms is polychromaticcontaining more than one of these? Choices: - gravity - filter - weight - wavelength A:
(Answer)
wavelength
Ques: Answer the following question given this paragraph: An electric field is a space around a charged particle where the particle exerts electric force on other charged particles. Because of their force fields, charged particles can exert force on each other without actually touching. Electric fields are generally represented by arrows, as you can see in the Figure below . The arrows show the direction of electric force around a positive particle and a negative particle. For an animated diagram, go to this URL: http://ocw. mit. edu/ans7870/8/8.02T/f04/visualizations/electrostatics/15-CreateField/CreateField_640. mpg. Q: What do you call the space around a charged particle where the particle exerts electric force on other charged particles? Choices: - melodic field - powered field - charged field - electric field A:
Ans: electric field
(Q).
Answer the following question given this paragraph: Long bones ossify and get longer as they grow and develop. These bones grow from their ends, known as the epiphysis, and the presence of a growth plate, or epiphyseal line, signifies that the bone is still growing. Q: What are the ends of long bones called? Choices: - cartilage - appendage - marrow extension - epiphysis A:
(A).
epiphysis
Ques:Answer the following question given this paragraph: Carbohydrates include sugars, starches, and fiber. Sugars and starches are used by the body for energy. One gram of sugar or starch provides 4 Calories of energy. Fiber doesn't provide energy, but it is needed for other uses. At age 13 years, you need about 130 grams of carbohydrates a day. Figure below shows good food sources of each type. Q: How many calories of energy does one gram of sugar or starch provide? Choices: - 5 - 3 - 10 - 4 A:

Ans:4
Ques:Answer the following question given this paragraph: There is great variation among species that make up the animal kingdom. Some of this variation is shown in Figure below . Despite the variation, there are a number of traits that are shared by all animals. The fact that all animals have certain traits in common shows that they share a common ancestor. How did such a diverse group of organisms evolve? What traits do all animals share? Read on to find out. Q: The fact that all animals have certain traits in common shows that they share what? Choices: - a common gene - a common brain - a common planet - a common ancestor A:

Ans:
a common ancestor