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: Natural convection is driven by what forces? Answer: buoyant
answer:
Natural convection is driven by buoyant forces.


question:
Question: What is the lowest level of organism that can perform all activities required for life? Answer: cell
answer:
A(n) cell is the lowest level of organism that can perform all activities required for life.


question:
Question: What protects the pollen of seed plants and spores of seedless plants? Answer: sporopollenin
answer:

Sporopollenin protects the pollen of seed plants and spores of seedless plants.