The Cenozoic era consists of the _____ periods.
A. Jurassic and Cretaceous
B. Cretaceous and Tertiary
C. Permian and Triassic
D. Triassic and Jurassic
E. Tertiary and Quaternary
E. Tertiary and Quaternary
You might also like to view...
Certain drugs use RNA interference as a mechanism of action. What molecule would the active compounds of these drugs be composed of?
A. Carbohydrate B. Steroid C. Protein D. Nucleic acid E. Small ion
What hypothesis suggests there is no competition between reef fish because there are so many factors to create a niche for each species?
a. Predation disturbance model b. Lottery model c. Competition model d. Resource limitation model
In muscle contraction, which of the following
triggers the power stroke?
a. release of Pi from the myosin head b. binding of ATP to the myosin head c. hydrolysis of ATP into ADP and Pi d. cross-bridge formation between actin and myosin e. relaxation of the sarcomere
The so-called robust australopithecines are:a
the earliest members of the genus Australopithecus. b. the line that gave rise to the genus Homo. c. the hominids that developed from Ardipithecus. d. a dead-end branch in hominid evolution. e. an extinct line of hominoids that existed about 6?7 million years ago.