Given that life on Earth appears to have arisen quite easily and ...

[FButt]

Given that life on Earth appears to have arisen quite easily and rapidly suggests that the factor flife, in the Drake equation could be close to
 
  A) 1
  B) 0.25
  C) 0
  D) 0.5

Question 2

You are standing on a sidewalk. There is a car in the distance. The horn on the car sounds. You hear it at a pitch that corresponds to a sound frequency lower than the frequency emitted by the horn. What can you conclude?
 
  A) The wind has a component of its velocity in a direction toward you.
  B) The car is moving on a line directly away from your present location.
  C) The wind has a component of its velocity in a direction away from you.
  D) The car has a component of its velocity in a direction away from you.
  E) Either A or C must be true.

[peilian]

Answer to Question 1

A

Answer to Question 2

D

[FButt]

TYSM

[diana chang]

Excellent