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.

[EX Q]: Question: Why do birds need a light-weight body? Answer: to stay aloft
[EX A]: Birds need a light-weight body for to stay aloft.

[EX Q]: Question: In what way do all vertebrates reproduce? Answer: sexually
[EX A]: All vertebrates reproduce sexually.

[EX Q]: Question: What kind of cell is a cell with two chromosomes? Answer: diploid cell
[EX A]:
A diploid cell is a cell with two chromosomes.