Do skeletal muscles work alone?

20 in the formula no3, what does the subscript 3 mean?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Nh3 +02-no + h20 is unbalanced what is the balanced equation