NEED HELP ASAP Please The diagram below shows how air near Earth's surface is warmed when it comes in contact with the warm surface of Earth. Which mechanism shows the transfer of energy as heat from Earth's surface to the air as shown by the label A?

On a frictionless air track, a blue glider with mass 0.200 kg is moving to the right with a speed of 8.00 m/s. it strikes a red glider that has mass 0.600 kg and that is initially at rest. after the collision, the blue glider is moving to the left with a speed of 3.00 m/s.(a) what are the magnitude and direction of the velocity of the red glider after the collision? (b) is this collision elastic?