The first vertebrates are seen in the fossil record of the:
A. Ediacaran.
B. Cambrian.
C. Ordovician.
D. Devonian.
E. Jurrasic.
B
Biology & Microbiology
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Pasteurization of milk
A. reduces microbial growth by decreasing availability of water. B. usually eliminates all disease-causing organisms. C. is a method for sterilization of food items. D. is no longer used for food processing in the United States.
Biology & Microbiology
Scavengers are heterotrophs
Indicate whether the statement is true or false
Biology & Microbiology
Freshwater fishes excrete most of their nitrogenous wastes through the kidneys. Indicate whether the statement is true or false
Biology & Microbiology
The process of lowering the activation energy of a chemical reaction is called ________.
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology