Pretty sure the answer would be C, because you need the warm and cold air to mix.
Answer:
Mass and velocity
Explanation:
Momentum is defined as the quantity of motion of a moving body measured as a product of it's mass and velocity. Have a nice day! ;-)
b.
The definition of evolution is the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.
The first one this is because the mutation on the frogs front legs could cause it to be harder to swim
