Which component becomes oxidized in the following chemical reaction?
4 Fe + 3 O2 ? 2 Fe2O3
a. water
b. iron
c. oxygen
d. rust
e. hydrogen
B
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Ammonification is the conversion of _________to NH3 and NH4.
A. living plant matter B. primary production C. inorganic nitrogen D. carbon isotopes E. None of these choices are correct.
A collective term used for the three layers of membranes surrounding the brain and spinal column is the:
a. dura mater. b. meninges. c. arachnoid. d. pia mater.
Carbon monoxide ____
a. traps heat in the atmosphere b. is an atmospheric pollutant c. causes acid rain d. interferes with the nervous system e. binds to a hemoglobin molecule and interferes with oxygen uptake
The expression "pull of the recent" refers to the fact that ________
A) younger fossils are more important for the study of evolution than older fossils B) older rocks are more likely to be volcanic rocks with no fossils C) younger rocks are more likely to be covered up or otherwise inaccessible D) the quality of the fossil record gets worse the farther back in time you look E) younger fossils are more likely to be preserved by permineralization