Scientists cannot agree on whether viruses are living or not ...

[faduma]

Scientists cannot agree on whether viruses are living or not because
 
  A) they are much smaller than other simple living organisms
  B) they can reproduce but do not require any utilization of energy to do so
  C) they can only reproduce within a host cell and not independently
  D) under certain conditions they can reproduce, but they do not contain any DNA

Question 2

The scientific discipline of astrobiology is
 
  A) one of the oldest branches of science
  B) a relatively young branch of science
  C) a similar age to other fundamental disciplines like physics and chemistry
  D) a hypothetical branch of science which has yet to be established

[mcarey591]

Answer to Question 1

C

Answer to Question 2

B

[faduma]

Excellent

[peter]

Thanks for the timely response, appreciate it