TASK DEFINITION: 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.
PROBLEM: Question: What is the study of the chemical elements necessary for plant growth called? Answer: plant nutrition

SOLUTION: Plant nutrition is the study of the chemical elements necessary for plant growth.

PROBLEM: Question: Why do birds need a light-weight body? Answer: to stay aloft

SOLUTION: Birds need a light-weight body for to stay aloft.

PROBLEM: Question: A mitotic spindle forms from the what? Answer: centrosomes

SOLUTION:
A mitotic spindle forms from the centrosomes.