Fossil records of horses show there have been dramatic changes in the species over the last __________ years.
a) 5,000
b) 5 million
c) 50 million
d) 5 billion
e) sapiens
Answer: C
Fossil records of horses show there have been dramatic changes in the species over the last __________ years.
a) 5,000
b) 5 million
c) 50 million
d) 5 billion
e) sapiens
Answer: C