When a cold air mass collides with a warm air mass and lifts the warm air out of its way, there is .The rising warm air causes water vapor to condense and clouds to form. A )cold front
B ) A hot and cold front
C ) hot front
D ) None of the above

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.