At the end of the Paleozoic era, _____ constituted about 90% of the known reptile genera
A)therapsids
B)pelcyosaurs
C)protorothyrids
D)thecodontians
E)amphibians
A
You might also like to view...
What absorbs sunlight in primary producers?
a. carbohydrates b. proteins c. chlorophyll d. enzymes e. nucleic acids
Which of the following does NOT help define foliation in metamorphic rocks?
A. a dominant orientation of crystals, such as mica B. crystals that grow in a random orientation C. flattened shapes of deformed objects, such as pebbles D. light- and dark-colored bands E. All of these choices are correct.
Orchard heaters and wind machines are most useful in preventing damaging low temperatures from occurring next to the ground on ____ nights
A) clear, windy B) cloudy, windy C) rainy D) clear, calm
In reference to military applications, the acronym SDI stands for _____ or "Star Wars"
a. Strategic Defense Initiative b. Satellite Defense Installation c. Satellite Detection and Insolation d. Space Detection and Isolation e. Submarine Defense Intelligence