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.
--------
Question: Question: What property of carbon and other elements can be used to date fossils and rocks, among other things? Answer: half-life

Answer: Half-life property of carbon and other elements can be used to date fossils and rocks, among other things.

Question: Question: Only about one percent of plants have lost what ability, turning them into consumers and even predators, instead of producers? Answer: photosynthesis

Answer: Only about one percent of plants have lost photosynthesis ability, turning them into consumers and even predators, instead of producers.

Question: Question: In the freshwater flatworms, protonephridia serve chiefly in what? Answer: osmoregulation

Answer:
In the freshwater flatworms, protonephridia serve chiefly in osmoregulation.