The oldest fossils found to date are more than _____ years old. ...

[nenivikky]

The oldest fossils found to date are more than _____ years old.
 
  a. 47 million
  b. 3 billion
  c. 1.5 billion
  d. 500 million
  e. 125 million

Question 2

One possible test for classifying contemporary animals into genera is to check for results of hybridization between
 
  a. individuals of different species.
  b. individuals of the same species.
  c. individuals of the same order.
  d. two males only.
  e. two females only.

[Dinolord]

Answer to Question 1

b

Answer to Question 2

a

[nenivikky]

Excellent

[cassie_ragen]

Gracias!