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: Why are seeds of a pine cone easily carried by the wind and dispersed? Answer: seeds have wings
[A]: Seeds of a pine cone are easily carried by the wind and dispersed because seeds have wings.


[Q]: Question: Loss of energy is the reason that what typically has few levels? Answer: food chain
[A]: Loss of energy is the reason that food chain typically has few levels.


[Q]: Question: What is common in two eukaryotic proteins? Answer: one domain
[A]:
One domain is common in two eukaryotic proteins.