Animals that strain plankton and tiny organic food particles from the surrounding water are ________
a. producers
b. detrital feeders
c. suspension feeders
d. predators
c
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Carbon monoxide is potentially dangerous because it
A) replaces oxygen on red blood cells. B) causes genetic mutations. C) causes cancer. D) causes birth defects.
Dust storms on Mars are generally
a. ?infrequent. b. ?extremely large. c. ?small. d. ?nonexistent. e. not able to be recorded.
Which of the following is NOT a way in which a volcano's history indicates the level of hazard it poses to nearby population centers?
A. average time between eruptions B. age of the oldest volcanic layer present C. abundance of felsic pyroclastic materials in its deposits D. length of time since last eruption
Which of the following does not belong on the list?
A) Abrasion B) Deflation C) Blowout D) Pitting E) Deposition