Answer:
Bernoullis principle says that as a liquid's flow rate increases the pressure of the fluid decreases (think of your thumb on a garden hose)
When air ( fluid) flows over a wingsurface the shape of the wing directs the air to travel a greater distance, and its speed is decreased.
The pressure difference below the wing (higher) relative to the pressure above the wing (lower pressure) creates lift as high pressure areas move to low pressure areas in an attempt to restore equilibrium