_________ occurs when an intravenous injection of antibodies, bsuch as gamma globulin is administered to someone as a treatment. The serum used for emergency treatment of snakebites is an example of this type of immunity.
A) Artificial passive immunity.
B) Artificial active immunity.
C) Natural passive immunity.
D) Natural active immunity.
E) Artificial specific immunity.
Answer: A) Artificial passive immunity.
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What is a valid, testable prediction based on this hypothesis?
A. Male crocodiles will prefer temperatures of 32 – 33?C. B. Incubation of any crocodile egg at 32?C, will result in a male crocodile. C. Male eggs will hatch at 32?C, while female eggs will not hatch at 32?C. D. Male eggs will be more fragile than female eggs. E. Crocodiles arrange the gender of offspring by manipulating incubation temperatures.
Diatoms can best be described as
a. unicellular and autotrophic. b. unicellular and heterotrophic. c. multicellular and autotrophic. d. multicellular and heterotrophic. e. multicellular and parasitic.
Despite disturbances, communities always reach a state of equilibrium
1.True 2.False
Due to character displacement, two closely related species may differ most morphologically when they
A. occupy different niches. B. share a common ancestor. C. are sympatric. D. occupy the same niche. E. are allopatric.