When marine geologists collect a core of undeformed ocean-floor sediment, they know that the youngest layer is on the top of the core and the oldest is at the bottom because of the principle of ________.
A. supposition
B. superposition
C. suspension
D. inclusion
E. cross-cutting relationships
Answer: B
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The formation of a nucleoside is an example of which type of reaction?
A) addition B) condensation C) oxidation D) substitution
In the language of the food chain, herbivorous animals are called ________
A) the apex B) primary consumers C) tertiary consumers D) secondary consumers E) dominant
What will be the new temperature of dry air that started at 25°C and was lifted 1 kilometer?
A. 25°C B. 10°C C. 35°C D. 5°C E. 15°C
The mixing ratio is the most important of the moisture indices because:
A) it is the ratio of water vapor to a mass of dry air (as opposed to all air). B) it is the ratio of water content to capacity. C) it is the mass of water vapor relative to the mass of all other atmospheric gasses. D) it is the ratio of water vapor to the volume of air involved.