Zooplankton-eating fish are ________.
a. primary consumers
b. detritivores
c. producers
d. herbivores
e. secondary consumers
Answer: e. secondary consumers
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Which of the following contribute(s) to the differences between the Archaea and the bacteria?
A. Archaea differ from bacteria in their tRNA composition, ribosome structure, and antibiotic sensitivity. B. Archaea have isopranyl glycerol ethers rather than fatty acid esters in their membrane lipids. C. Archaea lack muramic acid. D. All of the choices are correct.
What is the inguinal canal in males and how does it form during development?
What will be an ideal response?
Primary productivity is limited in surface waters of the open ocean by:
a. sunlight. b. nutrients. c. carbon dioxide. d. oxygen. e. temperature.
Calcification zone
What will be an ideal response?