Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
--------
Question: Living organisms are made up of biochemical type of carbon-based compounds.

Answer: Living organisms are made up of what type of carbon-based compounds?


Question: The human body has as many as two trillion lymphocytes, and lymphocytes make up about 25% of all of leukocytes.

Answer: The human body has as many as two trillion lymphocytes, and lymphocytes make up about 25% of all of what?


Question: Internal body fluids link exchange surfaces to body cells else.

Answer:
Internal body fluids link exchange surfaces to what else?