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: What is the critical factor for the survival of segmented worms? Answer: water and humidity
Water and humidity is the critical factor for the survival of segmented worms.

Question: What type of organisms have internal clocks that regulate cyclic processes? Answer: eukaryotic
Eukaryotic type of organisms have internal clocks that regulate cyclic processes.

Question: What is often a result of untreated atherosclerosis? Answer: a heart attack or stroke

A heart attack or stroke is often a result of untreated atherosclerosis.