Answer the following question given this paragraph: An example of a human polygenic trait is adult height. Several genes, each with more than one allele, contribute to this trait, so there are many possible adult heights. For example, one adult's height might be 1.655 m (5.430 feet), and another adult's height might be 1.656 m (5.433 feet) tall. Adult height ranges from less than 5 feet to more than 6 feet, but the majority of people fall near the middle of the range, as shown in Figure below . Q: Because several genes, each with more than one allele, contribute to determining height in humans, height is considered what kind of trait? Choices: - adaptive - maladaptive - epigenetic - polygenic A:
polygenic
(Question)
Answer the following question given this paragraph: FM radio is inherently less subject to noise from stray radio sources than AM radio. The reason is that amplitudes of waves add. So an AM receiver would interpret noise added onto the amplitude of its carrier wave as part of the information. An FM receiver can be made to reject amplitudes other than that of the basic carrier wave and only look for variations in frequency. It is thus easier to reject noise from FM, since noise produces a variation in amplitude. Television is also broadcast on electromagnetic waves. Since the waves must carry a great deal of visual as well as audio information, each channel requires a larger range of frequencies than simple radio transmission. TV channels utilize frequencies in the range of 54 to 88 MHz and 174 to 222 MHz. (The entire FM radio band lies between channels 88 MHz and 174 MHz. ) These TV channels are called VHF (for very high frequency). Other channels called UHF (for ultra high frequency) utilize an even higher frequency range of 470 to 1000 MHz. The TV video signal is AM, while the TV audio is FM. Note that these frequencies are those of free transmission with the user utilizing an old-fashioned roof antenna. Satellite dishes and cable transmission of TV occurs at significantly higher frequencies and is rapidly evolving with the use of the high-definition or HD format. Q: Which radio frequency should you listen to if you want less noise? Choices: - am - wave - cb - fm A:
(Answer)
fm
Ques: Answer the following question given this paragraph: 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. In conduction , heat is transferred as atoms collide. Q: What process involves the flow of heat from warmer objects to cooler objects? Choices: - activation - convection - radiation - conduction A:
Ans: conduction
(Q).
Answer the following question given this paragraph: The reaction is exothermic and thus the sign of the enthalpy change is negative. Q: What enthalpy change is observed in an exothermic reaction? Choices: - positive - no change - entropy - negative A:
(A).
negative
Ques:Answer the following question given this paragraph: There are two major types of seismic waves. Body waves travel through the Earth's interior. Surface waves travel along the ground surface. In an earthquake, body waves are responsible for the sharp jolts. Surface waves are responsible for the rolling motions that do most of the damage in an earthquake. Q: What are the rolling motions during an earthquake called? Choices: - tidal waves - seismic thrusts - velocity waves - surface waves A:

Ans:surface waves
Ques:Answer the following question given this paragraph: The atmosphere is made of gases that are essential for photosynthesis and other life activities. Q: What is made of gases that are essential for photosynthesis and other life activities? Choices: - air - ocean - stratosphere - atmosphere A:

Ans:
atmosphere