What type of adaptation is shivering?

Question

phscological or behavioral or structural?

and when fosills harded what rock to they become?

Answer 1

It would be hypothermic adaptation

and fossils become sedimentary usually

Answer 2

Shivering is your bodies way of generating heat by movement. As you know movement and exercise = heat. My teacher is from Pakistan and she said if she ever got chilly there shivering helped her to warm up but in the UK it's useless because it's too cold here.

Basically the minerals in a fossil change when they reach a certain depth in the ocean (due to the pressure). They can turn into silica for example. They are preserved in sedimentary rocks, most commonly limestone and shale. Hope i helped.