Do you think all organisms rely on the sun in part for energy?

No

Explanation:

Some organisms require diffrent type of treatment to live, than others. They can just eat bacteria and live without the sun.

Ex. giant tube worms, etc.

yes my friend.

Explanation:

All living organisms rely or the sun in part of energy.

we are also depend upon the plant . so we or organisms are depend upon the producers whereas the producers depend upon the other abiotic factors such as sunlight , oxygen , carbondioxide for prepareing food which is used by all living organisms for survive.

now, explanation

temeperature is transmit from hotter body to the coller body.

here, we have the sun as a hotter body

we are cooler body comperative to the sun.

so sun's heat is transmit to the all living organisms helps to give light , heat and solar energy also. sun is the prepetual source whose amount is neither increase nor decrease.

as you all know that, death body temperature is very low. because their body cannot get from the sun or from other sources.

so, if you cannot get the heat from other body you may die there.

by heating our body we get differnt kinds of energy and we can do our various works easily un our daily life.

so, sun is essential for all living organisms in part of energy.