How could a paleontologist distinguish between a bryozoan fossil and a brachiopod fossil?
A. You can only distinguish the two by examining the lophophore.
B. Bryozoans often look like bivalves.
C. Bryozoans are large and solitary.
D. Zoecia are always found in aggregates.
Answer: D
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Molecules that have both hydrophilic and hydrophobic components are referred to as ____
Fill in the blank with the appropriate word.
Engelmann assumes the bacteria are attracted to areas of ________ O2 concentration
a. Low b. Medium c. High
Refer to the accompanying figure. What is the function of the structure labeled as 6?
a. digestion b. food intake c. water discharge d. waste elimination e. asexual reproduction
Natural selection means most nearly the same as:
a) differential reproductive success. b) diploidy. c) non-random mating. d) genetic drift. e) gene flow.