During which era did dinosaurs dominate the earth?
A. Paleozoic
B. Cenozoic
C. Precambrian
D. Mesozoic
Answer: D
You might also like to view...
Because the Soviet regime converted most productive pastures into farmland in the mid-1900s to increase the country's supply of grain, northern Kazakhstan
A) has a large number of immigrants. B) has the highest population density in the steppe belt. C) had a major drop in its population D) has serious problems with desertification. E) has the lowest population density in the region.
The first European settlers at the far southern tip of Africa were the
A. British B. Dutch C. Belgians D. French
How many electrons are gained or lost in the following half-reaction? Na ? Na+
A) 1 electron is lost B) 1/2 electron is gained C) 1/2 electron is lost D) 1 electron is gained E) 2 electrons are gained
Which of the following is an inflow to an urban ecosystem?
A) solid waste B) polluted water C) polluted air D) heat E) natural resources