instruction:
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.
question:
Question: How many forces do objects on earth have acting on them at all times? Answer: two
answer:
Objects on earth have two forces acting on them at all times.


question:
Question: All cells undergo what during a lifetime, but when this process is out of control, cancer results? Answer: cell division
answer:
All cells undergo cell division during a lifetime, but when this process is out of control, cancer results.


question:
Question: What element is responsible for one-half of the osmotic pressure gradient that exists between the interior of cells and their surrounding environment? Answer: sodium
answer:

Sodium element is responsible for one-half of the osmotic pressure gradient that exists between the interior of cells and their surrounding environment.