Which is part of the convection cycle in earths atmosphere? a. hot, denser air rises
b. cold, denser air rises
c. hot, less-dense air rises
d. cold, less-dense air falls

What is the order of the moon, earth, and sun in a lunar eclipse and a solar eclipse?

Two technicians are discussing a resistance measurement between the can-h and can-l wires. technician a says this measurement should be done with the ignition switch in the "run" position. technician b states that a measurement of 0 ohms indicates an open in the network. which technician is correct?

What is a neurotransmitter involved in mood reward, addiction, and motor behaviors?