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: Where on earth do bacteria live? Answer: all environments
answer:
All environments on earth do bacteria live.


question:
Question: When different types of tissues work together to perform a unique function, what do they form? Answer: organ
answer:
When different types of tissues work together to perform a unique function, they form organ.


question:
Question: What is an estimation of all of the organic matter available as food, and involves measuring biomass in terrestrial environments? Answer: net primary productivity
answer:

Net primary productivity is an estimation of all of the organic matter available as food, and involves measuring biomass in terrestrial environments.