The difference in air velocity across the two surfaces creates lift, an upward force that opposes gravity.

A) animals that creep or slither along surfaces
B) animals that swim
C) animals that fly
D) animals that jump
E) animals that walk or run

Air Velocity

The speed at which air moves from one place to another, often measured in meters per second or feet per minute.

Lift

The force that directly opposes the weight of an object and supports it in the air, often used in the context of aircraft.

Gravity

A fundamental force of nature that attracts two bodies towards each other, affecting all matter and having profound effects on celestial and terrestrial dynamics.