Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.
One example: Sentence1: pesticides cause pollution. 
Sentence2: pollution can harm animals.
Solution is here: pollution.
Explanation: The word "pollution" is common to Sentence1 and Sentence2. So, it's a good answer.

Now, solve this: Sentence1: Basically, heat is energy. 
Sentence2: Head hair is especially important in preventing energy loss from the body.
Solution:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
energy