the point at which warm air begin to raise before colliding with cold air is 3
A jet stream forms high in the upper troposphere between two air masses<span> of very different temperature. The greater the temperature difference between the air masses, the faster the wind blows in the jet stream.
</span>.
.
So "Differences in temperature between two air masses" is the answer
The sequence and number of amino acids is different (each protein has a unique sequence and arrangement of amino acids).
The plates will move and the underwater island will start to move and shift. It's possible it will also weather