Which of the following is the most likely explanation for the modern-day distribution of dicynodont fossils? The dicynodonts were_____
A) carnivores that traveled widely to find prey
B) evenly distributed throughout all of Pangaea
C) most abundantly distributed throughout Gondwanaland
D) amphibious and able to swim long distances
C
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Laboratory strains of E. coli ____
a. undergo meiosis b. divide every 2 hours c. can be transformed but not conjugated d. have been engineered to produce human insulin e. are harmful to humans
If cowbird eggs are laid in an oropendola nest that is located near bee hives, what would be the expected outcome?
a. The cowbird eggs would be ejected from the nest to eliminate the competition. b. The cowbird eggs would be ejected from the nest due to a reaction of the mother bird's immune system. c. The cowbird eggs would not be ejected from the nest because they provide an additional food source. d. The cowbird eggs would not be ejected from the nest because they provide protection from large predators. e. The cowbird eggs would not be ejected from the nest because they provide protection from parasites.
About __________ of documented animal extinctions have been of invertebrates.
a. 50% b. 10% c. 20% d. 80% e. 90%
Select the terms that describe an organism's carbon source.
A. Lithotroph B. Chemotroph C. Autotroph D. Organotroph E. Heterotroph