How are identical twins different than fraternal twins (explain by discussing sperm and egg)?

To form identical, one fertilised egg splits and then develops into two babies with exactly the same genetic information. However to form fraternal twins, two eggs are fertilised by two sperm and produce two genetically unique children.

The correct answer is C. During the maintenance of homeostasis, at a cold day, our Muscles contract rapidly to produce heat, causing shivering. The energy for shivering is gained from the respiration and is released in the form of heat, which maintains the body temperature.