The groundwater system can heat the air in the school because the groundwater is warmer than the air in the school. This means that the molecules in the water have a higher average
kinetic energy than the molecules in the air. When the molecules collide, energy will transfer
from the water to the air, warming the air. This will happen even though the groundwater isn't
all that hot. As long as it is warmer than the air, it will heat the air

How does this excerpt develop the central idea that espionage during the civil war was often carried out by untrained citizens? it enhances the reader’s understanding by explaining why training was unnecessary. it changes the reader’s perception of what information a spy was able to obtain. it explains an ordinary person’s motivation for conducting espionage against the enemy. it adds moral complexity to espionage, due to the use of secret and dangerous methods.

Which function is positive for the entire interval (-3, -2]?

While in prison, malcolm's introduction to the elijah muhammad's teachings forces him to reflect on his own past experiences. why do those experiences persuade him to join the nation of islam? what, in malcolm's experiences, draws him to an activism more militant than the nonviolent activism of martin luther king jr?