Officially, Alex is not in the labor force.
Given that he is not actually employed (doesn't have an actual job), he cannot be considered part of the labor force. If he had some kind of job other than taking care of his children (even if it's a freelance job he can do from his home), then he would be in the labor force. However, this way, he is not and fall into the same category as unemployed students, for example.
Answer:
Because earthquakes shake up the soil and after an earthquake the layers of the earth could be mixed up
Explanation:
It’s the black tape that you can put around like wires and stuff
It caused people to look and study our world more closely that can be explained ed