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.

Q: Question: Where are some of the greatest concentrations of species found? Answer: in the tropics

A: Some of the greatest concentrations of species are found in the tropics.
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Q: Question: Fires, mainly caused by what, are a natural disturbance in temperate grasslands? Answer: lightning

A: Fires, mainly caused by lightning, are a natural disturbance in temperate grasslands.
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Q: Question: What type of tissue produces and secretes several hormones involved in lipid metabolism and storage? Answer: adipose tissue

A:
Adipose tissue type of tissue produces and secretes several hormones involved in lipid metabolism and storage.
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