Answer the following question given this paragraph: All objects absorb and emit electromagnetic radiation. The rate of heat transfer by radiation is largely determined by the color of the object. Black is the most effective, and white is the least effective. People living in hot climates generally avoid wearing black clothing, for instance (see Take-Home Experiment: Temperature in the Sun). Similarly, black asphalt in a parking lot will be hotter than adjacent gray sidewalk on a summer day, because black absorbs better than gray. The reverse is also trueblack radiates better than gray. Thus, on a clear summer night, the asphalt will be colder than the gray sidewalk, because black radiates the energy more rapidly than gray. An ideal radiator is the same color as an ideal absorber, and captures all the radiation that falls on it. In contrast, white is a poor absorber and is also a poor radiator. A white object reflects all radiation, like a mirror. (A perfect, polished white surface is mirror-like in appearance, and a crushed mirror looks white. Q: The rate of heat transfer by radiation is largely determined by what? Choices: - scope - sound - environment - color A:
color
(Question)
Answer the following question given this paragraph: When homologous chromosomes pair up during meiosis I, crossing-over can occur. Crossing-over is the exchange of genetic material between non-sister chromatids of homologous chromosomes. It results in new combinations of genes on each chromosome. Q: What is the term for the exchange of genetic material between non-sister chromatids of homologous chromosomes? Choices: - inheritance - asexual reproduction - meiosis - crossing-over A:
(Answer)
crossing-over
Ques: Answer the following question given this paragraph: Q: What are the two distinct types of cells found in the animal kingdom? Choices: - DNA and Eukaryotes - bacteria and eukaryotes - chromosomes and eukaryotes - prokaryotes and eukaryotes A:
Ans: prokaryotes and eukaryotes
(Q).
Answer the following question given this paragraph: Respiratory Rate and Control of Ventilation Breathing usually occurs without thought, although at times you can consciously control it, such as when you swim under water, sing a song, or blow bubbles. The respiratory rate is the total number of breaths, or respiratory cycles, that occur each minute. Respiratory rate can be an important indicator of disease, as the rate may increase or decrease during an illness or in a disease condition. The respiratory rate is controlled by the respiratory center located within the medulla oblongata in the brain, which responds primarily to changes in carbon dioxide, oxygen, and pH levels in the blood. The normal respiratory rate of a child decreases from birth to adolescence. A child under 1 year of age has a normal respiratory rate between 30 and 60 breaths per minute, but by the time a child is about 10 years old, the normal rate is closer to 18 to 30. By adolescence, the normal respiratory rate is similar to that of adults, 12 to 18 breaths per minute. Q: The normal respiratory rate per minute in adult humans is? Choices: - 6-12 breaths - 0-6 breaths - 18-24 breaths - 12-18 breaths A:
(A).
12-18 breaths
Ques:Answer the following question given this paragraph: Q: Internal metabolism and the external environment are the sources of heat for what? Choices: - hemeostasis - optimization - bioaccumulation - thermoregulation A:

Ans:thermoregulation
Answer the following question given this paragraph: When water is heated in the boiler, it expands. It might burst the pipes of the system if it weren't for the expansion tank. This tank holds excess water after it expands. Q: What happens to water when it is heated in the broiler? Choices: - it evolves - it contracts - it introduces - it expands A:
it expands