In this task, you are given a sentence and a question, you would be asked to create the answer which is contained in the sentence provided.
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Question: Sentence: Natural selection evolutionary process has adapted protonephridia to different tasks in different environments. Question: What evolutionary process has adapted protonephridia to different tasks in different environments?

Answer: natural selection


Question: Sentence: A carbon atom with 6 protons and 8 neutrons is more specifically known as carbon 14. Question: A carbon atom with 6 protons and 8 neutrons is more specifically known as?

Answer: carbon 14


Question: Sentence: Population is the unit of evolution. Question: What is the unit of evolution?

Answer:
population