Which of the following statements is true? -stirring, compression, and friction are ways to increase heat. -the intensity of light depends on the number of photons. -the sun's energy comes from the nuclear reactions of changing hydrogen into helium. -all of the above.

The first three statements are all true.

Hey there! 

Question: which of the following statements is true? 

Stirring, compression, and friction are ways to increase heat (A); The intensity of light depends on the number of photons (B) ;The sun's energy comes from the nuclear reactions of changing hydrogen into helium (C) 

Sum it all up:"All of the above"(D) would most likely be your result of this question 

Good luck on your assignment and enjoy your day! 

~

Did you ever figure out the right answers since you asked?