The amount of reserves of oil in a given formation is determined ...

[frankwu]

The amount of reserves of oil in a given formation is determined at the beginning of exploitation of a resource and never changes much thereafter.
 
  What will be an ideal response?

Question 2

Which of the statements about hydrogen-oxygen fuel cells is/are true?
 
  a. Electricity may be produced when the hydrogen and oxygen react.
  b. The only outputs are water and electrical energy.
  c. The output continues as long as hydrogen and oxygen are supplied.
  d. Prototype fuel cells have proven to be up to 80 efficient.
  e. All of the above statements are correct.

[essyface1]

Answer to Question 1

As more oil is pumped, more knowledge of the formation is gained and more
accurate estimates of the amount of oil that will ultimately be recovered from the formation
can be made. Thus, this statement is incorrect.

Answer to Question 2

E

[frankwu]

TYSM

[xiaomengxian]

Thanks for the timely response, appreciate it