How does the sun energy affect the movement of global winds

Which statement is true about ionic compounds?

The plant food contains nh4)3po4 what tests would you run to verify the presence of the nh4 ion and the po4 ion

Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction