The ________ Era began with the appearance of complex life, as indicated by fossils like trilobites.
A. Precambrian
B. Cenozoic
C. Paleozoic
D. Quaternary
E. Mesozoic
Answer: C
You might also like to view...
A substance consisting of which molecule shown below should have a higher boiling point?
A. The molecule on the right, C2H2Cl, because it has a greater number of atoms. B. The molecule on the left, COCl2, because it has a fewer number of atoms. C. The molecule on the right, C2H2Cl, because of electronegativity considerations. D. The molecule on the left, COCl2, because it is less symmetrical.
Hawaiian volcanoes are examples of:
a) Shield volcanoes b) Stratovolcanoes (or composite cones) c) Cinder cones (or scoria cones) d) Mud volcanoes e) Lava domes
The process that includes subdividing a house from single-family owner occupancy to multiple occupancy is
A) blockbusting. B) filtering. C) gentrification. D) redlining. E) urban blight.
A favorable condition for hurricane development is a
a. deep layer of stable air. b. shallow layer of absolutely unstable air. c. shallow layer of conditionally unstable air. d. deep layer of conditionally unstable air. e. completely stable environment.