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.

Q: Question: What is the most common life form in the ocean? Answer: plankton

A: Plankton is the most common life form in the ocean.
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Q: Question: What is a measure that has both size and direction? Answer: vector

A: Vector is a measure that has both size and direction.
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Q: Question: Which single most factor is responsible for the extinction of hundreds of species of birds? Answer: human actions

A:
Human actions is responsible for the extinction of hundreds of species of birds.
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