Formaldehyde is a toxic preservative with the following chemical formula: H2C 
O Which of the following compounds would best serve as a starting point for its production?
A. CH3CH2OH
B. H2O
C. H2C CH2
D. H3COH
E. none of the above
Answer: D
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The problem of food waste is of greater concern in:
A. The industrial world B. The less developed world C. Africa D. India
________ is(are) not (an) animal adaptation(s) prominent in the desert biome
A) Burrowing B) Nomadism C) Hygrophytic characteristics D) Nocturnal habits E) Estivation
States that sediment extends laterally in all directions until it thins and pinches out, or terminates,
against the edge of the depositional basin:a. principle of original horizontality b. principle of superposition c. principle of lateral continuity d. principle of cross-cutting relationships e. principle of uniformitarianism
What type of eruption formed the main volcanic features in this figure?
A) Fluid lava flows
B) Large pyroclastic eruptions
C) Lava fountain
D) Fissure eruptions
E) Eruptions beneath the seafloor