9. Needed substances are carried to the body cells by * O A. enzymes
O B. blood
O C. water
D. food
Help please

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

Which one of the following substances would be the most soluble in ccl4? na2so4 h2o ch3ch2ch2ch2oh c4h10 hi

What is happening when the water inside a kettle heats up and begins to boil