What is the correct name for the warmer phase of the enso cycle? a. la niña
b. tropical storm
c. el niño
d. hurricane

The drawing represents the movement of particles in a substance. what changes of state can this substance undergo

Which process transfers heat from inside earth to its surface? convection currents in mantle pulling away of tectonic plates drawing in of tectonic plates convection currents in crust

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