Which of the following elements is present in thiols but not in alcohols?
A) C
B) O
C) P
D) S
D
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Ethanol is a controversial biofuel because it is still unclear how much carbon dioxide is emitted during the production and burning of ethanol compared to conventional gasoline.
Answer the following statement true (T) or false (F)
When a boulder and a pebble are dropped, the pebble falls as fast as the boulder because
A. both accelerate equally. B. both pick up speed equally. C. its ratio of gravitational force to mass is the same as the boulder's. D. air resistance is less for the pebble.
Which of the following is an ecological legacy?
A) woody debris left after a fire B) hurricane C) logging of forests D) fire E) water
A(n) ________ marks the site where old, oceanic lithosphere begins its descent into a subduction zone
Fill in the blank(s) with correct word