TASK DEFINITION: In this task, you are given a question and an answer, you would be asked to create the sentence based on the Question-Answer provided. It should be contained within the Question-Answer provided.
PROBLEM: Question: What is the unit of evolution? Answer: population

SOLUTION: Population is the unit of evolution.

PROBLEM: Question: A phospholipid is a bond between the glycerol component of a lipid and what else? Answer: phosphorous molecule

SOLUTION: A phospholipid is a bond between the glycerol component of a lipid and phosphorous molecule else.

PROBLEM: Question: Are humans a new or old species on the earth? Answer: new

SOLUTION:
Are humans a new or old species on the earth?