What hypothesis did Luis and Walter Alvarez test in relation to the mass extinction of dinosaurs 65 million years ago (MYA)?
A) The mass extinction 65 MYA was caused by a surge of catastrophic cyclones.
B) The mass extinction 65 MYA was caused by a slow but steady increase in climate temperatures.
C) The mass extinction 65 MYA was caused by an impact of an extraterrestrial object.
D) The mass extinction 65 MYA was caused by the loss of preferred plants for food.
C
You might also like to view...
A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species. Which type of species are most likely to have been wrongly classified based on morphology alone?
A. Parasitic species B. Aquatic species C. Bilateral species D. Terrestrial species E. Species with spiral development
Which of the following would have the most surface area assuming the same volume?
A) a golf ball B) a perfect sphere C) a cube D) a tube
What is meant by homologous recombination?
What will be an ideal response?
Which mechanism have viroids evolved to stay stable outside host cells?
a. forming a hairpin-shaped double-stranded molecule with closed ends outside cells b. forming a protein capsid outside cells c. forming a protective polysaccharide sheath outside cells d. all of the above