What are some real - life examples of when you want to keep heat energy from being lost to the environment

Friction: Rubbing your hands together to create heat

Conduction: Putting your body parts over something warm, for example a fire

Radiation: Laying in the sun to soak up the warmth

children tend to take more after their grandparents more than their parents. it’s the dna you received that was passed down to you somewhere in your family. maybe one of your grandparents had/has straight hair and you might have gotten it from them.

i think that c)gold was found there

but i am not sure