Which of the following would produce an ecosystem with a small number of trophic levels?
A) an ecosystem with short growing seasons B) coldwater ocean ecosystems
C) an ecosystem small in size and biomass D) an ecosystem in which insects are absent
Answer: C
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HIV studies revealed that it is closely related to
A. smallpox virus. B. ebola virus. C. herpes virus. D. a chimpanzee virus. E. mad cow disease.
Match each mollusk with the correct taxonomic class.
1. nautili 2. snails 3. chitons 4. clams a. Polyplacophora b. Gastropoda c. Bivalvia d. Cephalopoda
Hydrolysis reactions are catabolic reactions that use water to split the reactant into smaller subunits.
Answer the following statement true (T) or false (F)
Match the protist with the supergroup it belongs in
Entamoeba A) Amoebozoa B) Excavata C) Chromalveolata D) Archaeplastida