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.

Example Input: Question: What type of organisms are helpless at birth and require lots of help from their parents? Answer: altricial organisms
Example Output: Altricial organisms are helpless at birth and require lots of help from their parents.

Example Input: Question: In solids, particles can't overcome the force of attraction between them because they lack what? Answer: kinetic energy
Example Output: In solids, particles can't overcome the force of attraction between them because they lack kinetic energy.

Example Input: Question: What protects tissues of the central nervous system from changes in ph? Answer: bicarbonate ions
Example Output:
Bicarbonate ions protects tissues of the central nervous system from changes in ph.