Multiple Choice
The earth's continents drift because
A) they are actually floating on the surface of the sea.
B) different areas of land alternately rise above and sink below the oceans.
C) the plates of the earth's crust interact with the molten rock below.
D) gravitation forces acting on the earth change over time.
Correct Answer:
Verified
Correct Answer:
Verified
Q1: The process that explains the movements of
Q3: Some of the earliest fossils indicate that
Q4: The extinction that wiped out the dinosaurs
Q5: Sexual reproduction probably evolved<br>A)to increase genetic variation.<br>B)to
Q6: At the time the earth was formed,the
Q7: The mass extinction of 65 million years
Q8: Most of the history of life on
Q9: The universe<br>A)has always been the same size
Q10: Multicellular organisms first appear<br>A)3.6 billion years ago.<br>B)2
Q11: The sudden appearance of organisms with shells