Author Question: The Planck era is another name for the present period of time in the universe. Indicate whether ... (Read 62 times)

bobbysung · **on:** Jul 27, 2018

The Planck era is another name for the present period of time in the universe.

Indicate whether the statement is true or false

Question 2

Which of the following statements best describes the idea behind the Labeled Release Experiment on board the Viking landers?

A) living organisms in the soil should give off gases when they metabolize nutrients
B) soil with living organisms in it should contain organic molecules
C) living organisms in the soil should incorporate carbon from atmospheric gases
D) radioactive gases should be produced when radioactive nutrients are added to a soil sample