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 are the sporophytes in ferns? Answer: leafy plants

SOLUTION: Leafy plants are the sporophytes in ferns.

PROBLEM: Question: What occurs when a population reaches the carrying capacity? Answer: growth stops

SOLUTION: Growth stops when a population reaches the carrying capacity.

PROBLEM: Question: Amines are weak bases due to the presence of a lone pair of what on the nitrogen atom? Answer: electrons

SOLUTION:
Amines are weak bases due to the presence of a lone pair of electrons on the nitrogen atom.