Which of the following is true of the alcohol functional groups in 1,3-propanediol?
A) One is primary and one is secondary.
B) One is primary and one is tertiary.
C) Both are primary.
D) Neither is primary.
C
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Small wind and pressure variations occurring at a particular location can be thought of as a __________ phenomenon
A) microscale B) mesoscale C) synoptic scale D) global scale
Explain how the relationship between the atmosphere and the ocean affects weather and climate
A key characteristic of aquatic dead zones is ________
A) a high concentration of organisms resulting in extreme competition and finally the death of most B) a low concentration of nitrogen and phosphorus nutrients C) a low concentration of keystone species D) a low concentration of oxygen E) a high concentration of urban development
Which of the following statements is true about the circle of illumination?
a. It always passes through the north and south poles. b. It separates the part of the earth that is experiencing daylight from the part that is experiencing night. c. It represents the parallel of latitude that experiences daylight for 24 hours on the summer solstice from the rest of the earth. d. All of these choices are true.