Given a scientific passage and an answer, generate a question for the given answer.

Passage: Like a blanket on a sleeping person, greenhouse gases act as insulation for the planet. The warming of the atmosphere is because of insulation by greenhouse gases. Greenhouse gases are the component of the atmosphere that moderate Earth's temperatures. Answer: insulation
Like a blanket on a sleeping person, greenhouse gases act as what for the planet?

Passage: Fats may be either saturated or unsaturated. A saturated fat is a fat that consists of triglycerides whose carbon chains consist entirely of carbon-carbon single bonds. Therefore, the carbon chains are saturated with the maximum number of hydrogen atoms possible. An unsaturated fat is a fat that consists of triglycerides whose carbon chains contain one or more carbon-carbon double bonds . A fat with one double bond is called monounsaturated, while a fat with multiple double bonds is called polyunsaturated (see Figure below ). Answer: saturated and unsaturated
What are the two types of fats?

Passage: Melting, sublimation, and evaporation absorb heat from their surroundings. Freezing, deposition, and condensation release heat. Answer: heat
Melting, sublimation, and evaporation absorb what from their surroundings?