You are presented with the question "A life involving travel is a type of movement that changes what?" and the following answer choices: 
- Continents drifting
 - the environment
 - Animal survival
 - important habitats
 - major threat to health
 - population size
 - an organism's body
 - Something to move

Now knowing that migration is a type of movement that changes population size and migration Much of the life of a spiny lobster involves travel, choose the best answer.


 

      population size   