heat
The sun is essential to life on this planet, so if the sun was not producing light/heat - life on this planet would no longer exist.
The "red dot" on Jupiter is a giant storm.
The greenhouse effect is what keeps the heat in after the light energy is converted to heat energy. If we did not have a greenhouse effect, life would no longer exist since the entire earth would be below freezing.
They lack enough oxygen to support life. In addition, they either lack sufficient heat, like Pluto (which is not considered a planet anymore) or are simply too hot, like Venus, for life to exist.
friction
Then life would not exist
Then life would not exist
Most of it is converted into heat energy, that is ... it ceases to exist.
Not true. You do have heat - otherwise you could not exist, not even as a dead body!
Fpr heat and beauty
It is not possible to answer the question because it is based on a false premise that I do not have any heat. If I had no heat then I would not exist.
As a metal californium is a heat conductor but no data exist on the thermal conductivity.
We're modestly familiar with the source of heat and light. And we know that heat and light both exist and are real. Cold and darkness do not exist. They merely describe the lack of heat and light, respectively.
No
Cold is a relative state. It does exist, however and can be quantified and measured.
Heat is real. Cold is just a human concept for it's opposite. Cold does not exist.