Some scientists believe that about 65 million years ago an asteroid, meteorite, or comet struck the earth causing mass extinctions. One line of evidence for this event is:
B. the presence of a very large meteorite dated at around 65 million years ago embedded in the ground in central Asia
C. a crater in Arizona, measuring about 18 miles across, dated about 65 million years ago
D. there is no good evidence for this assumed event
A. a stratum rich in iridium, rare on earth but more common in extraterrestrial bodies, found in many areas around the world
You might also like to view...
Men have held significantly more positions of political leadership worldwide than women
a. True b. False Indicate whether the statement is true or false
Collaborative research refers to the people being studied as __________
A) human subjects B) informants C) partners D) representatives
________ is the view that the appearance of more modern forms can be explained by a series of disasters
Fill in the blank(s) with correct word
According to McCurdy in "Using Anthropology," the first thing a new manager at UTC did after assuming a new position was to
a. shrink-wrap books in the warehouse. b. ask warehouse workers, customer outlet staff, and other employees about problems and procedures. c. ask previous warehouse managers for advice. d. change the counting and shipping procedures in the warehouse.