Color, size, or other phenotypic differences between males and females are called ____
Fill in the blank with the appropriate word.
sexual dimorphisms
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Nitrogenase is an oxygen-sensitive enzyme even though many diazotrophs are aerobic microorganisms
Indicate whether the statement is true or false.
The biggest problem facing coastal habitats is not dumping but:
a. overfishing. b. river runoff. c. development. d. offshore oil spills. e. nuclear power plant leakage.
Prior to the union of the nuclei of the egg and sperm, meiosis II is completed by the ovum
Indicate whether the statement is true or false
Health workers working with diphtheria commonly receive a serum with antibodies against the pathogen. What type of immunity would this be?
a. active, natural immunity b. passive artificial immunity c. active, artificial immunity d. passive, natural immunity